Inch Thread Tolerances

Limits of Size-Unified Screw Threads

Nominalsize andthreadsper inch

0-80 or. 060-80

1-64 or. 073-64

. 073-72

2- 56 or.086-56

2-64 or. 086-64

3-48 or. 099-48

3-56 or. 099-56

4-40 or. 112-40

4 -48 or.112-48

5-40 or. 125-40

5-44 or. 125-44

6-32 or. 138-32

6- 10 or. 138-40

8-32 or. 164-32

8-36 or. 164-36

10-24 or190-24

10-32 or. 190-32

12-24 or. 216-24

12-28 or. 216-28

12-32 or.216-32

M-20 or. 250-20

M-28 or.250-28

M-32 or. 250-32

M«-18 or.3125-18

M 6-20 or. 3125-20

M«-24 or. 3125-24

Me-28 or. 3125-28

Seriesdesigna-

tion

CNF

UNC

UNF

UNC

UNF

UNC

UNF

UNC

UNF

UNC

UNF

UNC

U N F

UNC

UNF

UNC

UNF

UNC

UNF

UNEF

UNC

UNF

UNEF

UNC

UN

UNF

UN

External

Class

2 A3A

2A3A

2A3A

2A3A

2A3 A

2 A3A

2A3A

2A3A

2 A3A

2A3 A

2A3 A

2A3A

2A3 A

2 A3 A

2A3 A

2 A3A

2A3A

2A3A

2A3A

2A3A

1A2A3A

1A2A3A

2A3A

1A2A3A

2A3A

to to

*-

>»

2A3A

Allow-ance

in.0. 0005

.0000

.0006

.0000

.0006

.0000

.0006

.0000

.0006

.0000

.0007

.0000

.0007

.0000

.0008

.0000

.0007

.0000

.0008

.0000

.0007

.0000

.0008

.0000

.0008

.0000

.0009

.0000

.0008

.0000

.0010

.0000

.0009

.0000

.0010

.0000

.0010

.0000

.0009

.0000

.0011

.0011

.0000

.0010

.0010

.0000

.0010

.0000

.0012

.0012

.0000

.0012

.0000

.0011

.0011

.0000

.0010

.0000

Major diameter limits

Max

in.0. 0595

.0600

.0724

.0730

.0724

.0730

. 0854

.0860

.0854

.0860

.0983

.0990

.0983

.0990

. 1112

. 1120

. 1113

. 1120

. 1242

. 1250

. 1243

.1250

. 1372

. 1380

. 1372

. 1380

. 1631

. 1640

.1632

.1640

. 1890

. 1900

. 1891

.1900

.2150

.2160

. 2150

.2160

.2151

.2160

.2489

.2489

.2500

.2490

.2490

.2500

.2490

.2500

.3113

.3113

. 3125

.3113

.3125

.3114

.3114

.3125

.3115

.3125

Min

in.0. 0563

.0568

.0686

.0692

.0689

.0695

.0813

.0819

.0816

.0822

.0938

.0945

.0942

.0949

. 1061

. 1069

. 1068

. 1075

1191.1199

. 1195

. 1202

. 1312

.1320

.1321

. 1329

. 1571

. 1580

. 1577

. 1585

.1818

.1828

. 1831

. 1840

.2078

.2088

.2085

.2095

.2091

.2100

.2367

.2408

.2419

.2392

.2425

.2435

.2430

.2440

.2982

.3026

.3038

.3032

.3044

.3006

.3042

.3053

.3050

.3060

Min '

in.

.2367

.2982

Pitch diameter limits

Max

in.0. 0514

.0519

. 0623

.0629

.0634

.0640

.0738

.0744

. 0753

.0759

. 0848

.0855

.0867

.0874

.0950

.0958

.0978

.0985

. 1080

.1088

.1095

. 1102

. 1169

.1177

. 1210

. 1218

. 1428

. 1437

. 1452

. 1460

.1619

. 1629

.1688

. 1697

.1879

. 1889

. 1918

.1928

. 1948

. 1957

.2164

.2164

.2175

.2258

.2258

.2268

.2287

.2297

.2752

.2752

.2764

.2788

.2800

.2843

.2843

.2854

.2883

.2893

Min

in.0.0196

.0506

. 0603

.0614

. 0615

.0626

.0717

. 0728

.0733

.0744

.0825

. OS3S

.0845

.0858

.0925

. 0939

.0954

.0967

. 1054

.1069

. 1070

. 1083

. 1141

.1156

. 1184

. 1198

.1399

. 1415

. 1424

.1439

. 1586

.1604

. 1658

. 1674

.1845

.1863

.1886

.1904

. 1917

.1933

.2108

.2127

.2147

.2208

. 2225

.2243

.2255

.2273

.2691

.2712

.2734

.2748

.2770

.2788

.2806

.2827

.2849

.2867

Toler-ance

Is.0.0018

.0013

.0020

.0015

.0019

.0014

.0021

.0016

.0020

.0015

.0023

.0017

.0022

.0016

.0025

.0019

0024.0018

.0026

.0019

.0025

.0019

.0028

.0021

.0026

.0020

.0029

.0022

.0028

.0021

.0033

.0025

.0030

.0023

.0034

.0026

.0032

.0024

.0031

.0024

.0056

.0037

.0028

.0050

.0033

.0025

.0032

.0024

.0061

.0040

.0030

.0040

.0030

.0055

.0037

.0027

.0034

.0026

MinorDiam-eter

Min

I n .0 0415

.0425

05020513

05250536

.0601

.0612

.06320643

.0690

.0703

.07290742

07630777

0819.0833

.0892

.0907

.09220935

.0938

.0953

10221036

.11961212

.1244

.1259

.1315

. 1333

1455. 1471

.1574

.1592

. 1654

.1672

.1714

.1730

.1783

.1802

. 1822

.1976

. 1993

.2011

.2052

.2070

.2330

.2351

.2373

.2423.2445

.2517

.2535

.2556

.2617

.2636

Internal

Class

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

IB2B3B

IB2B3B

2B3B

IB2B3B

2B3B

IB2B3B

2B3B

Minor diam-eter limits

Min

in.0. 0465

.0465

.0561

.0561

.0580

.0580

.0667

.0667

.0691

.0691

.0764

. 0764

.0797

.0797

.0849

.0849

.0894

.0894

.0979

.0979

. 1004

.1004

.104

.1040

. I l l

. 1110

.130

.1300

.134

. 1340

. 145

.1450

.156

.1560

.171

.1710

.177

.1770

.182

.1820

.196

.196

. 1960

.211

.211

.2110

.216

.2160

.252

.252

.2520

.258

.2580

.267

.267

.2670

.2742740

Max

in.0. 0514

.0514

.0623

.0623

.0635

.0635

. 0737

.0737

.0753

.0753

.0845

.0815

.0865

.0865

.0939

.0939

.0968

.0968

.1062

.1062

. 1079

. 1079

.114

. 1140

. 119

.1186

.139

.1389

.142

.1416

. 156

.1555

. 164

.1641

.181

. 1807

.186

.1857

. 190

.1895

.207

.207

.2067

.220

.220

.2190

.224

.2229

.265

.265

.2630

.270

.2680

.277

.277

.2754

.2822807


Min

in.0. 0519

.0519

.0629

.0629

.0640

.0640

.0744

.0744

.0759

.0759

.0855

. 0855

.0874

.0874

.0958

.0958

.0985

. 0985

. 1088

. 1088

.1102

.1102

. 1177

.1177

. 1218

.1218

.1437

. 1437

.1460

. 1460

.1629

. 1629

.1697

. 1697

.1889

. 1889

.1928

.1928

.1957

.1957

.2175.2175.2175

.2268

.2268

.2268

.2297

.2297

.2764

.2764

.2764

.2800

.2800

.2854

.2854

.2854

.2893

.2893

Max

in.0. 0542

.0536

.0655.0648

.0665

.0659

.0772

.0765

.0786

.0779

. 08S5

.0877

.0902

.0895

.0991

.0982

. 1016

.1008

. 1121

.1113

. 1134

.1126

.1214

. 1204

. 1252

.1243

. 1475

.1465

.1496

. 1487

. 1672

. 1661

.1736

.1726

. 1933

. 1922

.1970

. 1959

. 1998

. 1988

.2248

.2224

.2211

.2333

.2311

.2300

.2339

.2328

.2843

.2817

.2803

.2852

. 2839

.2925

.2902

.2890

.29372926

Toler-ance

in.0.0023

.0017

.0026

.0019

.0025

.0019

.0028

.0021

.0027

.0020

.0030.0022

.0028

.0021

.0033

.0024

.0031

.0023

.0033

. 0025

.0032

.0024

.0037

.0027

.0034

.0025

.0038

.0028

.0036

.0027

.0043

.0032

.0039

.0029

.0044

.0033

.0042

.0031

.0041

.0031

.0073

.0049

.0036

.0065

.0043

.0032

.0042

.0031

.0079

.0053

.0039

.0052

.0039

.0071

.0048

.0036

.00440033

Majordiam-eter

Min

in.0.0600

.0600

.0730

.0730

.0730

.0730

.0860

.0860

.0860

.0860

.0990

.0990

.0990

.0990

. 1120

. 1120

. 1120

. 1120

. 12EO

. 1250

.1250

. 1250

. 1380

.1380

.1380

. 1380

.1640

.1640

. 1640

. 1640

. 1900

. 1900

. 1900

.1900

.2160

.2160

.2160

.2160

.2160

.2160

.2500

.2500

.2500

.2500

.2500

.2500

.2500

.2500

. 3125

.3125

.3125

.3125

.3125

.3125

.3125

.3125

.3125

. 3125

See footnotes at end of table.

16

Limits of Size-Unified Screw Threads/continued


M 6-32 or. 3125-32

36-16 or. 375-16

56-20 or. 375-20

56-24 or. 375-24

56-28 or. 375-28

56-32 or. 375-32

M 6-14 or. 4375-14

7A 6-16 or. 4375-16

!<6-20or. 4375-20

Jle-28 or. 4375-28

V\ 6-32 or. 4375-32

H-13 or.500-13

H-16 or.500-16

V«-20or.500-20

H-28or.500-28

^-32 or.500-32

W«-12 or. 5625-12

9-16-16 or. 5625-16

Me-18or. 5625-18

M 6-20 or. 5625-20

M 6-24 or. 5625-24

M 6-28 or. 5625-2S

?i»-32or. 5625-32

56-11 or.625-11

M-12 or. 625-12

Seriesdesigna-

tion

UNEF

UNC

UN

UNF

UN

U N E F

UNC

UN

UNF

U N E F

UN

UNC

UN

UNF

UNEF

UN

UNC

UN

UNF

UN

UNEF

UN

UN

UNC

UN

External

Class

2A3A

1A2A3A

2A3A

1A2A3A

2A3 A

2A3A

1A2 A3A

2A3A

1A2A3 A

2 A3A

2A3A

1A2A3A

2A3 A

1A2A3A

2A3 A

2A3A

1A2A3A

2A3 A

CO M

•—

»>

2A3A

2A3A

2A3A

2A3A

1A2A3A

2A3A

Allow-ance

in..0010.0000

.0013

.0013

.0000

.0012

.0000

.0011

.0011

.0000

.0011

.0000

.0010.0000

.0014

.0014

.0000

.0014

.0000

.0013

.0013

.0000

.0011

.0000

.0010

.0000

.0015

.0015

.0000

.0014

.0000

.0013

.0013

.0000

.non

.0000

.0010

.0000

.0016

.0016

.0000

.0014

.0000

.0014

.0014

.0000

.0013

.0000

.0012

.0000

.0011

.0000

.0010

.0000

.0016

.0016

.0000

.0016

.0000


Max

in..3115.3125

.3737

.3737

.3750

.3738

.3750

.3739

. 3739

.3750

.3739

.3750

.3740

.3750

.4361

.4361

.4375

.4361

.4375

.4362

.4362

.4375

.4364

.4375

.4365

.4375

.4985

. 4985

.5000

.4986

.5000

.4987

.4987

.5000

.4989

.5000

.4990

.5000

.5609

.5609

.5625

.5611

.5625

.5611

.5611

.5625

.5612

.5625

.5613

.5625

.5614

.5625

.5615

.5625

.6234

.6234

.6250

.6234

.6250

Min

in.. 3055.3065

. 3595

.3643

.3656

.3657

.3669

.3631

.3667

.3678

.3674

.3685

.3680

.3690

.4206

.4258

.4272

.4267

.4281

.4240

.4281

.4294

.4299

.4310

.4305

.4315

.4822

.4876

.4891

.4892

.4906

.4865

.4906

.4919

.4924

.4935

.4930

.4940

.5437

.5495

.5511

.5517

.5531

.5480

.5524

.5538

.5531

.5544

.5541

.5553

.5549

.5560

.5555

.5565

.6052

.6113

.6129

.6120

.6136

Min '

in.

.3595

.4206

.4822

.5437

.6052


Max

in..2912.2922

.3331

.33313344

.3413

.3425

.3468

.3468

.3479

.3507

.3518

.3537

.3547

.3897

.3897

.3911

.3955

.3969

.4037

.4037

.4050

.4132

.4143

.4162

.4172

.4485

.4485

.4500

.4580

.4594

.4662

.4662

.4675

.4757

.4768

.4787

.4797

.5068

.5068

.5084

.5205

.5219

.5250

.5250

.5264

.5287

.5300

.5342

.5354

.5382

.5393

.5412

.5422

5644.5644.5660

.5693

.5709

Min

in..2880.2898

.3266

.32S7

.3311

.3372

.3394

.3411

.3430

.3450

.3471

.3491

.3503

.3522

.3826

.3850

.3876

.3909

.3935

.3974

.3995

.4019

.4096

.4116

.4128

.4147

.4411

.4435

.4463

.4533

.4559

.4598

.4619

.4643

.4720

.4740

.4752

.4771

.4990

.5016

.5045

.5158

.5184

.5182

.5205

.5230

.5245

.5268

.5303

.5325

.5345

.5365

.5377

.5396

.5561

.5589

.5619

.5639

.5668

Toler-ance

in..0032.0024

.0065

.0044

.0033

.0041

.0031

.0057

.0038

.0029

.0036

.0027

.0034

.0025

.0071

.0047

.0035

.0046

.0034

.0063

.0042

.0031

.0036

.0027

.0034

.0025

.0074

.0050

.0037

.0047

.0035

.0064

.0043

.0032

.0037

.0028

.0035

.0026

.0078

.0052

.0039

.0047

.0035

.0068

.0045

.0034

.0042

.0032

.0039

.0029

.0037

.0028

.0035

.0026

.0083

.0055

.0041

.0054

.0041

MinorDiam-eter

Min

in.2677

.2695

28602881

.2905

.3047

.3069

3140.3159.3179

.3239

.3259

3300.3319

336233863412

3503.3529

.36503670

.3694

38643884

.3925

.3944

.39113935

.3963

.4127.4153

427342944318

.4488

.4508

.4549

.4568

.4449

.44754503

4752.4778

4821.4843.4869

49204943

5032.5054

.5113

.5133

5174.5193

.4971

.4999

.5029

.5098

.5127

Internal

Class

2B3B

IB2B3B

2B3B

IB2B3B

2B3B

2B3B

IB2B3B

2B3B

IB2B3B

2B3B

2B3B

IB2B3B

2B3B

IB2B3B

2B3B

2B3B

IB2B3B

2B3B

IB2B3B

2B3B

2B3B

2B3B

2B3B

IB2B38

2B3B


Min

in..279.2790

.307

.307

.3070

.321

.3210

.330

.330

.3300

.336

.3360

.341

.3410

.360

.360

.3600

.370

.3700

.383

.383

.3830

.399

.3990

.404

.4040

.417

.417

.4170

.432

.4320

.446

.446

.4460

.461

.4610

.466

.4660

.472

.472

.4720

.495

.4960

.502

.502

.5020

.508

.5080

.617

.5170

.524

.5240

.529

.5290

.527

.527

.5270

.535

.5350

Max

in..286.2847

.321

.321

.3182

.332

.3297

.340

.340

.3372

.345

.3426

.349

.3469

.376

.376

.3717

.384

.3800

.395

.395

.3916

.407

.4051

.411

.4094

.434

.434

.4284

.446

.4419

.457

.457

.4537

.470.4676

.474

.4719

.490

.490

.4843

.509

.5040

.515

.515

.5106

.520

.5162

.527

.5244

.532

.5301

.536

.5344

.546

.546

.5391

.553

.5463


Min

in..2922.2922

.3344

.3344

.3344

.3425

.3425

. 3479

.3479

.3479

.3518

.3518

.3547

.3547

.3911

.3911

.3911

.3969

.3969

.4050

.4050

.4050

.4143

.4143

.4172

.4172

.4500

.4500

.4500

.4594

.4594

.4675

.4675

.4675

.4768

.4768

.4797

.4797

.5084

.5084

.5084

.5219

.5219

.5264

.5264

.5264

.5300

.5300

.5354

.5354

.5393

.5393

.5422

.5422

.5660

.5660

.5660

.5709

.5709

Max

in..2964.2953

.3429

.3401

.3387

.3479

.3465

.3553

.3528

.3516

.3564

.3553

.3591

.3580

.4003

.3972

.3957

.4028

.4014

.4131

.4104

.4091

.4189

.4178

.4216

.4205

.4597

.4565

.4548

.4655

.4640

.4759

.4731

.4717

.4816

.4804

.4842

.4831

.5186

.5152

.5135

.5280

.5265

.5353

.5323

.5308

.6355

.5341

.5405

.5392

.5441

.5429

.5467

.5456

.5767

.5732

.5714

.5780

.5762

Toler-nnee

in..0042.0031

.0085

.0057

.0043

.0054

.0040

.0074

.0049

.0037

.0046

.0035

.0044

.0033

.0092

.0061

.0046

.0069

.0045

.0081

.0054

.0041

.0046

.0035

.0044

.0033

.0097

.0065

.0048

.0061

.0046

.0084

.0066

.0042

.0048

.0036

.0045

.0034

.0102

.0068

.0051

.0061

.0046

.0089

.0059

.0044

.0055

.0041

.0051

.0038

.0048

.0036

.0045

.0034

.0107

.0072

.0054

.0071

.0053

Majordiam-eter

Min

in.. 3125.3125

.3750

.3750

.3750

.3750

.3750

.3750

.3750

. 3750

.3760

.3750

.3750

.3750

.4375

.4375

.4375

.4375

.4375

.4375

.4375

.4375

.4375

.4375

.4375

.4375

.5000

.5000

.5000

.5000

.5000

.6000

.5000

.6000

.5000

.6000

.5000

.6000

.5625

.5625

.5625

.5625

.5625

.6625

.5625

. 5625

.5625

.5626

.5625

.5625

.5625

.5625

. 5625

.5625

.6250

.6250

.6250

.6250

.6250


17



H-16 or. 625-16

H-18 or. 625-18

. 625-20

. 625-24

54-28 or. 625-28

U-32 or. 625-32

'M6-12or. 6875-12

'Me- 16 or. 6875-16

'M 6-20 or. 6875-20

'M 6-24 or. 6875-24

' M 6-28 or. 6875-28

'M 6-32 or. 6875-32

•K-10 or. 750-10

34-12 or. 750-12

54-16 or.750-16

34-20 or.750-20

?i-28 or. 750-28

M-32 or.750-32lM6-12or

.8125-12

"M 6-16 or.8125-16

'M 6-20 or. 8125-20

'M 6-28 or.8125-28

'?i6-32or. 8125-32

56-9 or.875-9

56-12 or. 875-12

56-14 or. 875-14

Seriesdesigna-

tion

UN

U X F

UN

U N E F

UN

UN

UN

UN

UN

U N E F

UN

UN

UNC

UN

U N F

UNEF

UN

UN

UN

UN

UNEF

UN

UN

UNC

UN

UNF

External

Class

2A3 A

1A2 A3 A

2A3 A

2A3 A

2 A3 A

2A3 A

2A3 A

2A3A

2A3 A

2A3 A

2A3A

2A3 A

1A2A3 A

2A3A

W t

o H

-»>

2A3A

2A3A

2A3A

2A3A

2A3A

2A3A

2A3A

2A3A

1A2A3A

2A3A

1A2A3A

Allow-ance

in..0014.0000

.0014

.0014

.0000

.0013

.0000

.0012

.0000

.0011

.0000

.0011

.0000

.0016

.0000

.0014

.0000

.0013

.0000

.0012

.0000

.0011

.0000

.0011

.0000

.0018

.0018

.0000

.0017

.0000

.0015

.0015

.0000

.0013

.0000

.0012

.0000

.0011

.0000

.0017

.0000

.0015

.0000

.0013

.0000

.0012

.0000

.0011

.0000

.0019

.0019

.0000

.0017

.0000

.0016

.0016

.0000


Max

in..6236.6250

.6236

.6236

.6250

.6237

.6250

.6238

.6250

.6239

.6250

.6239

.6250

.6859

.6875

.6861

.6875

.6862

.6875

.6863

.6875

.6864

.6875

.6864

.6875

.7482

.7482

.7500

.7483

.7500

.7485

.7485

.7500

.7487

.7500

.7488.7500

.7489

.7500

.8108

.8125

.8110

.8125

.8112

.8125

.8113

.8125

.8114

.8125

.8731

.8731

.8750

.8733

.8750

.8734

.8734

.8750

Min

in..6142.6156

.6105

.6149

.6163

.6156

.6169

.6166

.6178

.6174

.6185

.6179

.6190

.6745

.6761

.6767

.6781

.6781

.6794

.6791

.6803

.6799

.6810

.6804

.6815

.7288

.7353

.7371

.7369

.7386

.7343

.7391

.7406

.7406

.7419

.7423

.7435

.7429

.7440

.7994

.8011

.8016

.8031

.8031

.8044

.8048

.8060

.8054

.8065

.8523

.8592

.8611

.8619

.8636

.8579

.8631

.8647

Min «

in.

.7288

.8523


Max

in.. 5830.5844

.5875

.5875

.5889

.5912

.5925

.5967

.5979

.6007

.6018

.6036

.6047

.6318

.6334

.6455

.6469

.6537

.6550

.6592

. 6604

.6632

.6643

.6661

.6672

.6832

.6832

.6850

.6942

.6959

.7079

.7079

.7094

.7162

.7175

.7256

.7268

.7286

.7297

.7567

.7584

.7704

.7719

.7787

.7800

.7881

.7893

.7911

.7922

.8009

.8009

.8028

.8192

.8209

.8270

.8270

.8286

Min

in..5782.5808

.5805

.5828

.5854

.5S69

.5893

.5927

.5949

.5969

.5990

.6000

.6020

.6264

.6293

.6407

.6433

.6494

.6518

.6552

.6574

. 6594

.6615

. 6625

.6645

.6744

.6773

.6806

.6887

.6918

.7004

.7029

.7056

.7118

.7142

.7218

.7239

.7250

.7270

.7512

.7543

.7655

.7683

.7743

.7767

.7843,7864

,7875.7895

.7914

.7946

.7981

,8137.8168

.8189

.8216,8245

Toler-ance

in..0048.0036

.0070

.0047

.0035

.0043

.0032

. 0040

.0030

.0038

.0028

.0036

.0027

.0054

.0041

.0048

.0036

.0043

.0032

.0040

.0030

.0038

.0028

.0036

.0027

.0088

.0059

.0044

.0055

.0041

.0075

.0050

.0038

.0044

.0033

.0038

.0029

.0036

.0027

.0055

.0041

.0049

.0036

.0044

.0033

.0038

.0029

.0036

.0027

.0095

.0063

.0047

.0055

.0041

.0081

.0054

.0041

MinorDiam-eter

Min

in..5376.5402

.544454675493

.5544

.5568

5656. 5678

57375758

57975817

5723.5752

.6001

.6027

61696193

6281.6303

6362638,'i

6422.6442

609461236156

63466377

.659866236650

67936817

.6986.7007

7047.7067

6971.7002

72497277

.7418

.7442

76117632

.7672

.7692

7193. 7225.7260

.7596

.7627

. 7725

.7752

.7781

Internal

Class

2B3B

IB2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

IB2B3B

2B3B

IB2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

IB2B3B

2B3B

IB2B3B


Min

in..557.5570

.565

.565

.5650

.571

.5710

.580

.5800

.586

.5860

.591

.5910

.597^5970

.620

.6200

.633

.6330

.642

.6420

.649

.6490

.654

.6540

.642

.642

.6420

.660

.6600

.682

.682

.6820

.696

.6960

.711

.7110

.716

.7160

.722

.7220

.745

.7450

.758

.7580

.774

.7740

.779.7790

.755

.755

.7550

.785

.7850

.798

.798

.7980

Max

in..571.5662

.578

.578

.5730

.582

.5787

.590

.5869

.595

.5926

.599

.5969

.615

.6085

.634

.6284

.645

.6412

. 652

.6494

.657

.6551

.661

. 6594

.663

.663

.6545

.678

.6707

.696

.696

.6908

.707

.7037

.720

.7176

.724

.7219

.740

.7329

.759

.7533

.770

.7662

.782

.7801

.786

.7844

.778

.778

.7681

.803

.7952

.814

.814

.8068


Min

in ..5844.5844

.5889

.5889

.5889

.5925

.5925

.5979

.5979

.6018

.6018

.6047

.6047

.6334

.6334

. 6469

.6469

.6550

.6550

.6604

.6604

. 6643

.6643

.6672

.6672

.6850

.6850

.6850

.6959

.6959

.7094

.7094

.7094

.7175

.7175

.7268

.7268

.7297

.7297

.7584

.7584

.7719

.7719

.7800

.7800

.7893

.7893

.7922

.7922

.8028

.8028

.8028

.8209

.8209

.8286

.8286

.8286

Max

in..5906.5890

.5980

.5949

.5934

.5981

.5967

.6031

.6018

.6067

.6055

.6093

.6082

.6405

.6387

.6531

.6515

.6606

.6592

.6656

.6643

.6692

.6680

.6718

.6707

. 6965

.6927

.6907

.7031

.7013

.7192

.7159

.7143

.7232

.7218

.7318

.7305

.7344

.7333

.7656

. 7638

.7782

.7766

.7857

.7843

.7943

.7930

.7969

.7958

.8151

.8110

.8089

.8281

.8263

.8392

.8356

.8339

Toler-ance

in..0062.0046

.0091

.0060

.0045

.0056

.0042

.0052

.0039

.0049

.0037

.0046

.0035

.0071

.0053

.0062

.0046

.0056

.0042

.0052

.0039

.0049

.0037

. 0046

.0035

.0115

.0077

.0057

.0072

.0054

.0098

.0065

.0049

.0057

.0043

.0050

.0037

.0047

.0036

.0072

.0054

.0063

.0047

.0057

.0043

.0050

.0037

.0047

.0036

.0123

.0082

.0061

.0072

.0054

.0106

.0070

.0053

Majordiam-eter

Min

in..6250.6250

.6250

.6250

.6250

.6250

.6250

.6250

.6250

.6250

.6250

.6250

.6250

.6875

.6875

.6875

.6875

.6875

.6875

.6875

.6875

.6875

.6875

.6875

.6875

.7500

.7500

.7500

.7500

.7500

.7500

.7500

.7500

.7500

.7500

.7500

.7500

.7500

.7500

.8125

.8125

.8125

. 8125

.8125

.8125

.8125

.8125

.8125.8125

.8750

.8750

.8750

.8750

.8750

.8750

.8750

.8750


18


Xominalsize andthreads

per inch

56-16 or. 875-16

Td-20 or. 875-20

56-28 or. 875-28

56-32 or. 875-32

Seriesdesigna-

tion

UX

U X E F

UX

LX

15 ie-12 or UX.9375-12

'Me- 16 or. 9375-16

1 •"'•16-20 or. 9375-20

'•"'In- 28 or. 9375-28

'"'ls-32 or. 9375-32

1-8 or1. 000-8

1-12 or1.000-12

1-16 or1.000-16

1-20 or1.000-20

1-28 or1.000-28

1-32 or1. 000-32

1 M 6-8 or1. 0625-8

1M 6-12 or1.0625-12

1 M 6-16 or1.0625-16

1M 6-18 or1. 0625-18

lMe-20or1. 0625-20

1 J/16-28 or1. 0625-28

H6-7or1. 125-7

1 W-8 or1. 125-8

1. 125-12

lH-16or1.125-16

1.125-18

l'/6-20or1. 125-20

ux

UXEF

UX

UX

UXC

UXF

CX

UN"EF

UX

UX

UX

UX

UX

UXEF

UX

UX

UXC

UX

UXF

UX

UXEF

UX

External

Class

2 A3 A

2A3 A

2A3A

2A3A

2A3 A

2A3A

2 A3 A

2A3 A

2A3 A

1A2A3 A

1A2 A3A

2 A3 A

2A3A

2 A3 A

2A3A

2A3 A

2A3A

2A3A

2A3 A

2A3A

2A3A

CO t

o >

—>

»

2A3A

1A2A3A

2A3A

2A3A

2A3A

Allow-ance

in,.0015.0000

.0013

.0000

.0012

.0000

.0011

.0000

.0017

.0000

.0015

.0000

.0014

.0000

.0012

.0000

.0011

.0000

,0020.0020.0000

.0018

.0018

.0000

.0015

.0000

.0014

.0000

.0012

.0000

.0011

.0000

.0020

. 0000

.0017

.0000

.0015

.0000

.0014.0000

.0014

.0000

.0012

.0000

.0022

. 0022

.0000

.0021

.0000

.0018

.0018

.0000

.0015

.0000

.0014

.0000

.0014

.0000


Max

in..8735.8750

.8737

.8750

.8738

.8750

.8739

.8750

.9358

.9375

.9360

.9375

.9361

.9375

.9363

.9375

.9364

.9375

.9980

.99801. 0000

.9982

.99821. 0300

.99851. 0000

.99861.0000

.99881.0000

.99891.0000

1. 06051. 0625

1. 06081. 0625

1.06101. 0625

1.06111. 0625

1.06111. 0625

1.06131. 0625

1.12281. 12281. 1250

1. 12291. 1250

1. 12321. 12321. 1250

1. 12351. 1250

1. 12361. 1250

1.12361. 1250

Min

in..8641.8656

.8656

.8669

.8673

.8685

.8679.8690

.9244

.9261

.9266

.9281

.9280

.9294

.9298

.9310

.9304

.9315

.9755

.9830

.9850

.9810

.9868

.9886

.9891

.9906

.9905

.9919

.9923

.9935

.9929

.9940

1. 04551.0475

1.04941.0511

1.05161. 0531

1. 05241. 0538

1. 05301.0544

1.05481.0560

1. 09821.10641. 1086

1. 10791.1100

1. 10601.11181.1136

1.11411.1156

1. 11491. 1163

1.11551. 1169

Min <

in.

.9755

1. 0982

1. 1004


Max

in..8329.8344

.8412

.8425

.8506

.8518

.8536

.8547

.8817

.8834

.8954

.8969

.9036

.9050

.9131

.9143

.9161

.9172

.9168

.9168

.9188

.9441

.9441

.9459

.9579

.9594

.9661

.9675

.9756

.9768

.9786

.9797

.9793

.9813

1. 00671.0084

1. 02041.0219

1. 02501.0264

1.02861. 0300

1.03811 . 0393

1. 03001. 03001.0322

1. 04171. 0438

1.06911. 06911. 0709

1.08291. 0844

1. 08751.0889

1.09111. 0925

Min

in..8280.8308

.8368

.8392

.8468

.8489

.8500

.8520

.8760

.8792

.8904

.8932

.8991

.9016

.9091

.9113

.9123

.9144

.9067

.9100

.9137

. 9353

.9382

.9415

.9529

.9557

.9616

.9641

.9716

.9738

.9748

.9769

.9725

.9762

1.00101. 0042

1.01541. 0182

1.02031.0228

1. 02411.0266

1.03411. 0363

1.01911.02281. 0268

1.03481, 0386

1.06011.06311.0664

1. 07791. 0807

1. 08281. 0853

1.08661. 0891

Toler-ance

in..0049.0036

.0044

.0033

.0038

.0029

.0036

.0027

.0057

.0042

.0050

.0037

.0045

.0034

.0040

.0030

.0038

.0028

.0101

.0068

.0051

.0088

. 0059

.0044

.0050

.0037

.0045

.0034

.0040

.0030

.0038

.0028

.0068

.0051

.0057

.0042

.0050

.0037

.0047

.0036

.0045

.0034

.0040

.0030

.0109

.0072

.0054

.0069

.0052

.0090

.0060

. 0045

.0050

.0037

.0047

.0036

.0045

.0034

MinorDiam-eter

Min

in..7874.7902

8043.8067

.8236

.8257

.8297

.8317

.82198252

.8498

.8526

.8666

.8691

.8859

.8881

.8920

.8941

.82558288

.8325

.88128841

.8874

.9123

.9151

.9291

.9316

.9484

.9506

.95459566

8913.8950

.9469

.9501

.9748

.9776

.9842

.9867

9916.9941

1 01091.0131

.9263

.93009340

.9536

.9498

1 . 00601 00901 0123

1.03731.0401

1 . 04671 0492

1 05411.0566

Internal

Class

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

IB2B3B

IB2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

IB2B3B

2B3B

IB2B3B

2B3B

2B3B

2B3B


Min

in..807.8070

.821

.8210

.836

.8360

.841

.8410

.847

.8470

.870

.8700

.883

.8830

.899

.8990

.904

.9040

.865

.865

.8650

.910

.910

.9100

.932

.9320

.946

.9460

.961

.9610

.966

.9660

.927

.9270

.972

.9720

.995

.9950

1.0021. 0020

1.0081.0080

1.0241. 0240

.970

.970

.9700

.990

.9900

1.0351.0351. 0350

1.0571. 0570

1.0651. 0650

1.0711.0710

Max

in..821.8158

.832

.8287

.845

.8426

.849

.8469

.865

.8575

.884

.8783

.895

.8912

.907

.9051

.911

.9094

.890

.890

.8797

.928

.928

.9198

.946

.9408

.957

.9537

.970

.9676

.974

.9719

.952

.9422

.990

.9823

1.0091. 0033

1.0151. 0105

1.0201. 0162

1.0321. 0301

.998

.998

.9875

1.0151. 0047

1.0531.0531, 0448

1.0711.0658

1.0781. 0730

1.0821. 0787


Min

in..8344.8344

.8425

.8425

.8518

.8518

.8547

.8547

.8834

.8834

.8969

.8969

.9050

.9050

.9143

.9143

.9172

.9172

.9188

.9188

.9188

.9459

.9459

.9459

.9594

.9594

.9675

.9675

.9768

.9768

.9797

.9797

.9813

.9813

1.00841.0084

1.02191.0219

1.02641.0264

1.03001,0300

1. 03931. 0393

1.03221.03221.0322

1.04381.0438

1. 07091. 07091. 0709

1.08441.0844

1.08891.0889

1. 09251. 0925

Max

in..8407.8391

.8482

.8468

.8568

.8555

.8594

.8583

.8908

.8889

.9034

.9018

.9109

.9094

.9195

.9182

.9221

.9209

.9320

.9276

.9254

.9573

.9535

.9516

.9659

.9643

.9734

.9719

.9820

.9807

.9846

.9834

.9902

.9880

1.01581. 0139

1.02841.0268

1.03261.0310

1. 03591.0344

1. 04451. 0432

1.04631.04161. 0393

1.05281. 0505

1. 08261. 07871.0768

1.09091. 0893

1. 09511. 0935

1.09841.0969

Toler-ance

in..0063.0047

.0057

.0043

.0050

.0037

.0047

.0036

.0074

.0055

.0065

.0049

.0059

.0044

.0052

.0039

.0049

.0037

.0132

.0088

.0066

.0114

.0076

.0057

.0065

.0049

.0059

.0044

.0052

.0039

.0049

.0037

.0089

.0067

.0074

.0055

.0065

.0049

.0062

.0046

.0059

.0044

.0052

.0039

.0141

.0094

.0071

.0090

.0067

.0117

.0078

.0059

.0065

.0049

.0062

.0046

.0059

.0044

Majordiam-eter

Min

in..8750.8750

.8750

.8750

.8750

.8750

.8750

.8750

.9375

.9375

.9375

.9375

.9375

.9375

.9375

.9375

.9375.9375

1.00001.00001.0000

1. 00001. 00001.0000

1.00001.0000

1. 00001.0000

1. 00001.0000

1.00001.8000

1. 06251. 0625

1. 06251. 0625

1. 06251. 0625

1. 06251. 0625

1. 06251. 0625

1. 06251. 0625

1. 12501. 12501. 1250

1. 12501.1250

1. 12501. 12501.1250

1.12501.1250

1.12501.1250

1.12501.1250


19



l!4-28or1. 125-28

H-ie-Sor1. 1875-8

lMe-12or1. 1875-12

lM«-16or1. 1875-16

1M 6-18 or1. 1875-18

191 6-20 or1. 1875-20

1M6-28 or1. 1875-28

1)4-7 or1.250-7

lM-8or1. 250-8

1)4-12 or1. 250-12

lM-16or1. 250-16

I M -18 or1 250-18

!M-20or1.2,50-20

1)4- 28 or1. 250-28

Hi e -8 or1. 3125-8

lMe-12or1. 3125-12

lM«-16or1.3125-16

IMe- 18 or1.3125-18

151e-20or1. 3125-20

15-16-28 or1. 3125-28

1H-6 or1. 375-6

194-8 or1. 375-8

196-12 or1.375-12

1H-16 or1. 375-16

196-18 or1. 375-18

1H-20 or1. 375-20

Seriesdesigna-

tion

UN

UN

ux

UN

U N E F

UN

UN

UNO

UN

UNTF

UN

UNEF

UN

UN

UN

UN

UN

U N E F

U N

UN

UNC

UN

UNF

UN

UNEF

UN

External

Class

2A3A

2A3 A

2A3A

2A3A

2 A3A

2A3 A

2A3A

1A2A3A

2A3A

]A2A3A

2A3A

2A3A

2\3 A

2A3 A

2A3A

2 A3A

2A3A

2 A3 A

2\3 A

2A3A

1A2A3A

2A3 A

1A2 A3 A

2A3A

2A3A

2A3A

Allow-ance

in..0012.0000

.0021

.0000

.0017

.0000

.0015

.0000

.0015

.0000

.0014

.0000

.0012

.0000

.0022

.0022

.0000

.0021

.0000

.0018

.0018

.0000

.0015

.0000

.0015

.0000

.0014

.0000

.0012

.0000

.0021

.0000

.0017

.0000

.0015

.0000

.0015

.0000

.0014

.0000

.0012

.0000

.0024

.0024

.0000

.0022

.0000

.0019

.0019

.0000

.0015

.0000

0015.000

.0014

.0000


Max

in.1. 12381. 1250

1.18541. 1875

1.18581. 1875

1. 18601. 1875

1. 18601. 1875

1. 18611. 1875

1. 18631. 1875

1. 24781. 24781 . 2500

1.24791. 2500

1. 24821. 24821.2500

1. 24851.2500

1. 24851. 2500

1.24861. 2500

1.24881. 2500

1.31041.3125

1.31081. 3125

1.31101.3125

1.31101. 3125

1.31111.3125

1.31131.3125

1. 37261. 37261.3750

1. 37281. 3750

1.37311. 37311. 3750

1. 37351. 3750

1 373£1. 3750

1 37361. 3730

Min

in.1.11731. 1185

1. 17041. 1725

1. 17441. 1761

1. 17661. 1781

1. 17731.1788

1. 17801. 1794

1. 17981. 1810

1. 22321. 23141. 2336

1.23291. 2350

1.23101. 23681. 2386

1. 23911. 2406

1. 23981. 2413

1. 24051.2419

1. 24231. 2435

1.2954.2975

1. 29941. 3011

1.30161. 3031

1.30231. 3038

1. 30301.3044

1.30481. 3060

1.34531.35441. 3568

.3578

.3600

.3559

.3617

.3636

1.36411. 3656

1.36481.3663

1 365E1.3669

Min '

in.

1. 2232

1. 2254

1. 3453

1. 3503


Max

in.1. 10061.1018

1. 10421.1063

1.13171. 1334

1. 14541. 1469

1. 14991. 1514

1. 15361. 1550

1. 16311. 1643

1. 15501. 15501. 1572

1. 16671. 1688

1. 19411. 19411. 1959

1. 20791. 2094

1.21241.2139

1.21611.2175

1.22561. 2268

1. 22921. 2313

1. 25671.2584

1. 27041.2719

1.27491. 2764

1.27861.2800

1. 28811. 2893

1.26431.26431. 2667

1.29161.2938

1.31901.31901.3209

1.33291.3344

1, 33741. 3389

1.34111. 3425

Min

in.1. 09661.0988

1. 09721. 1011

1. 12591.1291

1. 14031. 1431

1. 14501. 1478

1. 14891.1515

1. 15901.1612

1. 14391. 14761.1517

1. 15971. 1635

1. 18491. 18791. 1913

1. 20281.2056

1.20751.2103

1.21141.2140

1.22151. 2237

1.22211. 2260

1.25091.2541

1.26531. 2681

1. 27001.2728

1. 27391. 2765

1. 28401. 2862

1. 25231.25631.2607

1.28441. 2884

1. 30961.31271.3162

1. 32781. 3306

1. 33251. 3353

1. 33641. 3390

Toler-ance

in..0040.0030

.0070

.0052

.0058

.0043

.0051

.0038

.0049

.0036

.0047

.0035

.0041

.0031

.0111

.0074

. 0055

.0070

.0053

.0092

.0062

.0046

. 0051

.0038

.0049

.0036

.0047

.0035

.0041

.0031

. 007-1

.0053

.0058

.0043

.0051

.0038

.0049

.0036

.0047

.0035

.0041.0031

.0120

.0080

.0060

. 0072

.0054

.0094

.0063

.0047

.0051

.0038

.0049

.0036

.0047

.0035

MinorDiam-eter

Min

in.1 07341 0756

1 .01601 0199

1 07181.0750

1 09971 1025

1 10891 1117

1.11841 1190

1 .15581 1580

1 05111 05481.0589

1 07851 0823

1 13081 13381 1372

1 16221.1650

1. 17141.1742

1.17891. 1815

1 19831.2005

1. 14091 . 1448

1 19681 2000

1.22471 2275

1 23391 2367

1 24141 2440

1.26081 2630

1 14401 14801. 1524

1 20321.2072

1.25551 25861 2621

1 28721 . 2900

1.29641.2992

1 30391 3065

Internal

Class

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

IB2B3B

2B3B

IB2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

IB2B3B

2B3B

IB2B3B

2B3B

2B3B

2B3B


Min

in.1.0861. 0860

1.0521. 0520

1.0971. 0970

1.1201.1200

1. 1271. 1270

1. 1331. 1330

1.1491. 1490

1.0051.0951. 0950

1. 1151. 1150

1. 1601. 1601. 1600

1. 1821. 1820

1.1901. 1900

1. 1961. 1960

1.2111.2110

1.1771. 1770

1.2221. 2220

1.2451. 2450

1.2521. 2520

1.2581. 2580

1.2741. 2740

1.1951.1951.1950

1.2401. 2400

1.2851.2851. 2850

1.3071. 3070

1.3151. 3150

1.3211.3210

Max

in.1.0951. 0926

1.0771. 0672

1.1151. 1073

1. 1341. 1283

1. 1401. 1355

1. 1451. 1412

1. 1571. 1551

1. 1231.1231.1125

1.1401. 1297

1.1781. 1781. 1698

1.1961. 1908

1.2031. 1980

1.2071. 2037

1.2201.2176

1.2021. 1922

1.2401. 2323

1.2591. 2533

1.2651. 2605

1.2701. 2662

1.2821.2801

1.2251.2251.2146

1.2651.2547

1.3031.3031.2948

1.3211.3158

1.3281.3230

1.3321.3287


Min

in.1. 10181.1018

1.10631.1063

1. 13341.1334

1. 14691. 1469

1. 15141. 1514

1. 15501. 1550

1.16431. 1643

1. 15721. 15721. 1572

1.16881.1688

1. 19591. 19591. 1959

1. 20941. 2094

1. 21391. 2139

1.21751.2175

1.22581.2268

1. 23131. 2313

1.25841.2584

1.27191.2719

1. 27641.2764

1.28001.2SOO

1.28931. 2893

1. 26671. 26671.2667

1.29381.2938

1. 32091. 32091. 3209

1. 33441. 3344

1. 33891. 3389

1. 34251.3425

Max

in.1. 10701. 1057

1.11541. 1131

1. 14091. 1390

1. 15351. 1519

1. 15771.1561

1. 16111. 1595

1. 16961.1683

1.17161.16681. 1644

1. 17801. 1757

1.20791. 20391.2019

1.21601.2141

1. 22021.2186

1. 22361.2220

1.23211. 2308

1. 24051. 23S2

1. 26591.2640

1. 27851.2769

1. 28271.2811

1.28611.2845

1.29461.2933

1.28221. 27711.2745

1. 30311. 3008

1. 33321.32911. 3270

1. 34101.3394

1.34521. 3436

1. 34861. 3470

Toler-ance

in..0052.0039

.0091

.0068

.0075

.0056

.0066

.0050

.0063

.0047

.0061

.0045

.0053

.0040

.0144

.0096

.0072

.0092

.0069

.0120

.0080

.0060

.0066

.0050

.0063

.0047

.0061

.0015

.0053

.0040

.0092

.0069

.0075

.0056

.0066

.0050

.0063

.0047

.OOfil

.0045

.0053

.0040

.0155

.0104

.0078

.0093

.0070

.0123

.0082

.0061

.0066

.0050

.0063

.0047

.0061

.0045

Majordiam-eter

Min

in.1.12501. 1250

1. 18751. 1875

1. 18751. 1875

1. 18751. 1875

1. 18751. 1875

1. 18751. 1875

1. 18751. 1875

1.25001.25001.2500

1.25001. 2500

1.25001. 25001.2500

1. 25001.2500

1. 25001.2500

1.25001.2500

1. 25001.2500

1. 31251. 3125

1. 31251. 3125

1.31251. 3125

1. 31251.3125

1.31251. 3125

1.31251. 3125

1. 37501.37501.3750

1. 37501.3750

1. 37501.37501.3750

1. 37501.3750

1. 37501.3750

1. 37501. 3750


20


Nominalsize andthreads

per inch

I3^28or1. 375-28

1 '/1 6-6 or1. 4375-6

HI 6-81. 4375-8

nir,-12or1.4375-12

VA 6-16 or1.4375-16

lT/i6-18or1.4375-18

!7/l6-20or1.4375-20

l7/i«-28or1.4375-28

U'.-6or1. 500-6

I V 1-8 or1. 500-8

H«-12or1. 500-12

Hi-ieor1. 500-16

lH-18or1. 500-18

lK>-20or1. 500-20

1 1/.-28 or1. 500-28

l»/i6-6or1. 5625-6

1 5-I6-8 or1. 5625-8

!9/i6-12or1.5625-12

l?-[«-16or1. 5625-16

I'M 6-18 or1. .5625-18

I?i6-20or1.5625-20

154-6 or1.625-6

l-W-8 or1.625-8

l-H-12 or1.625-12

lH-16or1. 625-16

154-18 or1. 625-18

l?4-20or1. 625-20

l'Me-6or1. 6875-6

IHio-Sor1. 6875-8

l 'M6-12or1.6875-12

l'M«-16or1. 6875-16

1 'Me- lHor1.6875-18

Seriesdesigna-

tion

UN-

UN1

UN-

UN'

UN'

UN'EF

UN-

UN'

UN'C

UN

UNF

UN"

UN'EF

UN

UN'

UN-

UN

UN-

UN

U N E F

UN'

UN-

UN

UN

UN

UN'EF

UN

UN

UN

UN-

UN

U N E F

External

Clas.

2 A3A

2A3 A

2 A3A

2 A3 A

2 A3 A

2A3 A

2A3 A

2A3 A

1A2 A3 A

2 A3 A

1A2A3 A

2A3 A

2A3A

2A3 A

2A3 A

2A3A

2A3 A

2A3A

2A3A

2A3A

2A3A

2 A3A

2A3A

2A3A

2A3 A

2A3A

2A3 A

2A3A

2A3A

2 A3 A

2 A3A

2A3 A

Allow-ance

in..0012.0000

.0024

.0000

.0022

.0000

.0018

.0000

.0016

.0000

.0015

.0000

.0014

.0000

.0013

.0000

.0024

.0024

.0000

.0022

.0000

.0019

. 0019

.0000

.0016

.0000

.0015

.0000

.0014

.0000

.0013

.0000

.0024

.0000

.0022

.0000

.0018

.0000

.0016

.0000

.0015

.0000

.0014

.0000

.0025

.0000

.0022

.0000

.0018

.0000

.0016

.0000

.0015

.0000

.0014

.0000

.0025

.0000

.0022

.0000

.0018

.0000

.0016

.0000

.0015

.0000


Max

in.1. 37381. 3750

1. 43511. 4375

1.43531.4375

1. 43571. 4375

1. 43591. 4375

1. 43601. 4375

1.43611.4375

1. 43621. 4375

1.49761. 49761. 5000

1.49781.5000

1. 49811. 49811. 5000

1. 49841. 5000

1. 49851. 5000

1.49861.5000

1.49S71.5000

1.56011.5625

1.56031. 5625

1.56071. 5625

1. 56091. 5625

1. 56101.5625

1. 56111. 5625

1. 62251. 6250

1.62281. 6250

1. 62321. 6250

1.62341. 6250

1.62351. 6250

1.62361.6250

1.68501.6875

1. 68531. 6875

1. 68571. 6875

1. 68591.6875

1.68601. 6875

Min

in.1.36731.3685

1.41691.4193

1.42031. 4225

1. 42431. 4261

1.42651. 4281

1.42731.4288

1. 42801.4294

1 . 42971. 4310

1. 47031.47941. 4818

1. 48281.4850

1.48091. 48671. 4886

1.48901. 4906

1. 48981.4913

1. 49051. 4919

1.49221.4935

1.54191.5443

1.54531.5475

1.54931.5511

1. 55151. 5531

1. 55231. 5538

1. 55301.5544

1. 60431. 6068

1. 60781. 6100

1.61181. 6136

1.61401.6156

1.61481.6163

1. 61551.61b9

1. 66681.6693

1. 67031. 6725

1.67431. 6761

1. 67651. 6781

1. 67731.6788

Mm '

in.

1. 4703

1.4753

1.6003


Max

in.I. 35061.3518

1.32681.3292

1.35411.3563

1.38161. 3834

1.39531. 3969

1. 39991.4014

1. 40361. 4050

1.41301.4143

1.38931. 38931.3917

1.41661.4188

1. 44401. 44401.4459

1. 45781.4594

1. 46241. 4639

1.46611. 4675

1. 47551.4768

1.45181.4542

1. 47911.4813

1.50661. 5084

1. 52031. 5219

1. 52491.5264

1.52861.5300

1. 51421. 5167

1.54161.5438

1.56911. 5709

1.58281.5844

1.58741.5889

1.59111.5925

1. 57671. 5792

1.60411.6063

1.63161.6334

1. 64531. 6469

1.64991.6514

Min

in.1. 34651. 3487

1.31881.3232

1.34691. 3509

1. 37571.3790

1. 39011. 3930

1. 39491. 3977

1. 39881. 4014

1. 40881.4112

1.37721.38121. 3856

1. 40931.4133

1. 43441. 43761.4411

1. 45261. 4555

1. 45741.4602

1. 46131.4639

1.47131. 4737

1. 44361. 4481

1.47171.4758

1. 50071.5040

1.51511. 5180

1.51991. 5227

1. 52381.5264

1.50601. 5105

1.53421. 5382

1.56321.5665

1. 57761.5805

1.58241.5852

1.58631. 5889

1.56841. 5730

1. 59661.6007

1. 62561.6289

1.64001.6429

1.64481.6476

Toler-ance

in..0041.0031

.0080

.0060

.0072

.0054

.0059

.0044

.0052

.0039

.0050

.0037

.0048

.0036

.0042

.0031

.0121

.0081

.0061

.0073

.0055

.0096

.0064

.0048

.0052

.0039

.0050

.0037

.0048

.0036

.0042

.0031

.0082

.0061

.0074

.0055

.0059

.0044

.0052

.0039

.0050

.0037

.0048

.0036

.0082

.0062

.0074

.0056

.0059

.0044

.0052

.0039

.0050

.0037

.0048

.0036

.0083

.0062

.0075

.0056

.0060

.0045

.0053

.0040

.0051

.0038

MinorDiam-eter

Min

In.1.32331 3255

1 21051 2149

1 26571 2697

1 32161 3249

1 34951 3524

1 . 36631 .3691

1 36631 3689

1 38561 3880

1 26891 27291.2773

1.32811 3321

1 . 38031.38351 3870

1 41201 4149

1.42131 4241

1.42881.4314

1.44811 4505

1.33531 3398

1 39051.3946

1 . 44661 4499

1 47451 4774

1.48381.4866

1.49131.4939

1.39771.4022

1 45301.4570

1 . 50911.5124

1 53701 . 5399

1.54631.5491

1 . 55381 . 5564

.4601

.4647

51545195

5715.5748

1 . 59941 .6023

1 60871.6115

Internal

Class

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

IB2B3B

2B3B

IB2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B


Min

in..336.3360

.257

.2570

.302

.3020

.347

.3470

1.3701. 3700

1.3771.3770

1.3831.3830

1.3991.3990

1.3201.3201. 3200

1.3651. 3650

1.4101.4101.4100

1.4321. 4320

1.4401. 4400

1.4461. 4460

1.4611.4610

1.3821. 3820

1.4271. 4270

1.4721. 4720

1.4951. 4950

1.5021. 5020

1.5081.5080

1.4451. 4450

1.4901. 4900

1.5351.5350

1.5571. 5570

1.5651. 5650

1.5711. 5710

1.5071.5070

1.5521.5520

1.5971. 5970

1.6201.6200

1.6271. 6270

Max

in.1.3451. 3426

1.2881. 2771

1.3271.3172

1.3651. 3573

1.3841.3783

1.3901. 3855

1.3951.3912

1.4071. 4051

1.3501. 3501.3396

1.3901. 3797

1.4281.4281.4198

1.4461.4408

1.4521.4480

1.4571. 4537

1.4701. 4676

1.4131. 4021

1.4521. 4422

1.4901.4823

1.5091. 5033

.515

.5105

.520

. 5162

.475

.4646

1.5151. 5047

1.5531.5448

1.5711.5658

1.5781. 5730

1.5821. 5787

1.5381. 5271

1.5771. 5672

1.6151.6073

1.6341. 6283

1.6401.6355


Min

in.1.35181.3518

1. 32921. 3292

1.35631. 3563

1. 38341. 3834

1. 39691. 3969

1.40141.4014

1. 40501. 4050

1.41431.4143

1.39171.39171.3917

1.41881.4188

1. 44591. 44591. 4459

1.45941.4594

1.46391.4639

1. 46751. 4675

1.47681.4768

1.45421.4542

1.48131.4813

1. 50841. 5084

1. 52191. 5219

1.52641.5264

1.53001.5300

1. 51671. 5167

1.54381.5438

1. 57091. 5709

1.58441.5844

1.58891.5889

1.59251. 5925

1. 57921. 5792

1.60631.6063

1.63341.6334

1. 64691. 6469

1. 65141.6514

Max

in.1.35711.3558

1. 33961.3370

1.3C571. 3634

1.39101.3S91

1.40371. 4020

1. 40791. 4062

1.41121. 4096

1. 41981.4184

1. 40751. 40221. 3996

1. 42831.4259

1.45841. 45421.4522

1.46621.4645

1. 47041.4687

1. 47371. 4721

1. 48231.4809

1.46481. 4622

1. 49091.4885

1. 51601.5141

1.52871. 5270

1.53291. 5312

1.53621.5346

1. 52741. 5247

1.55351. 5510

1. 57851.5766

1. 59121.5895

1.59541. 5937

1. 59871.5971

1.59001. 5873

1.61601. 6136

1.64121.6392

1. 65381. 6521

1.65801.6563

Toler-ance

in..0053.0040

.0104

.0078

.0094

.0071

.0076

.0057

.0068

.0051

.0065

.0048

.0062

.0046

.0055

.0041

.0158

. 0105

.0079

.0095

.0071

.0125

.0083

.0063

.0068

.0051

.0065

.0048

.0062

.0046

.0055

.0041

.0106

.0080

.0096

.0072

.0076

.0057

.0068

.0051

.0065

.0048

.0062

.0046

.0107

.0080

.0097

.0072

.0076

.0057

.0068

.0051

.0065

.0048

.0062

.0046

.0108

.0081

.0097

.0073

.0078

.0058

.0069

.0052

.0066

.0049

Majordiam-eter

Min

in.1.37501. 3750

1. 43751. 4375

1. 43751. 4375

1. 43751. 4375

1.43751. 4375

1. 43751. 4375

1. 43751.4375

1.43751.4375

1. 50001. 50001. 5000

1.50001.5000

1.50001.50001. 5000

1.50001.5000

1. 50001. 5000

1. 50001.5000

1.50001.5000

1.56251.5625

1.56251.5625

1.56251.5625

1.56251.5625

1.56251.5625

1. 56251.5625

1.62501.6250

1. 62501. 6250

1.62501.6250

1. 62501.6250

1.62501.6250

1.62501. 6250

1.68751.6875

1.68751.6875

1.68751.6875

1.68751.6875

1.68751. 6875

21


Nominalsize andthreads

por inch

l 'M«-20or1. 6875-26

154-5 or1. 750-5

1H-60T1.750-6

l?4-8 or1.750-8

m-12or1.750-12

Hi-16or1. 750-16

1 ?4-20 or1. 750-20

I1?-! «-6 or1. 8125-6

l>Me-8or1. 8125-8

l'M«-12or1.8125-12

I'M 6-16 or1. 8125-16

l 'M«-20or1. 8125-20

1M-6 or1.875-6

!74-8or1. 875-8

V,i-12 or1. 875-12

ltt-16 or1. 875-16

!H-20or1. 875-20

1"H 6-6 or1. 9375-6

I ' M 6-8 or1. 9375-8

l'M»-12or1. 9375-12

PMe-ieor1. 9375-16

l'M«-20or1.9375-20

2-4 K- or2.000-4.5

2-6 or2. 000-6

2-8 or2. 000-8

2-12 or2.000-12

2-16 or2. OOO-lfi

2-20 or2. 000-20

Scriesdesigna-

tion

UN

UNC

UN

UN

UN

UN

UN

UN

UN

UN

UN

UN

UN

UN

UN

UN

UN

UN

UN

UN

UN

UN

UNC

UX

UN

UN

UN

UN

External

Class

2A3A

1A2A3 A

2A3A

2A3A

2A3A

2A3A

2A3 A

2A3 A

2 A3A

2A3A

2A3A

2A3 A

2A3A

2A3A

2A3A

2A3A

2A3A

2A3A

2A3A

2A3 A

2A3A

2A3A

1A2 A3\

2.A3\

2A3 A

2 A3A

2A3 A

2A3 A

Allow-ance

it) ..0015.0000

.0027

.0027

.0000

.0025

.0000

.0023

.0000

.0018

.0000

.0016

.0000

.0015

.0000

.0025

.0000

.0023

.0000

.0018

.0000

.0016

.0000

.0015

.0000

.0025

.0000

.0023

.0000

.0018

.0000

.0016

.0000

.0015

.0000

.0026

.0000

.0023

.0000

.0018

.0000

.0016

.0000

.0015

.0000

.0029

. 1X129

. 0000

. 0026

.0000

.0023

.0000

.0018

.0000

.0016

.0000

.0015

.0000

Major diameter l imi ts

Max

is.1.68601.6875

1. 74731. 74731.7500

1. 74751.7500

1. 74771.7500

1.74821.7500

1. 74841.7500

1.74851.7500

1.81001. 8125

1.81021.8125

1.81071.8125

1. 81091. 8125

1.81101. 8125

1. 87251.8750

1.87271.8750

1. 87321.8750

1. 87341.8750

1. 87351.8750

1. 93491. 9375

1. 93521. 9375

1. 93571. 9375

1. 93591. 9375

1.93601. 9375

1.9971I.9W12.0000

1.99742. 0000

1. 99772.0000

1.99822.0000

1.99842.0000

1. 99852.0000

Min

in .1. 67791. 6794

1.71651.72681.7295

1.72931. 7318

1.73271.7350

1.73681. 7386

1. 73901.7406

1. 74041. 7419

1.79181. 7943

1. 79521. 7975

1.79931.8011

1.80151.8031

1.80291.8044

1.85431.8568

1. 85771.8600

1. 86181.8636

1.86401. 8656

1. 86541.8669

1.91671.9193

1.92021. 9225

1. 92431. 9261

1. 92651. 9281

1.92791.9294

1.96411.97511.9780

1.97921.9818

1. 98271.9850

1.98681. 9886

1. 98901.9906

1. 99041.9919

Min <

in.

1.7165

1. 7252

1.8502

:: .::1.9641

1. 9752


Max

in1. 65351. 6550

1.61741.61741. 6201

1.63921.6417

1.66651.6688

1. 69411. 6959

1. 70781'7094

1.71601.7175

1.70171. 7042

1.72901.7313

1.75661. 7584

1. 77031. 7719

1. 77851.7800

1.76421.7667

1. 79151. 7938

1.81911.8209

1.83281.8344

1.84101. 8425

1. 82661. 8292

1.85401.8563

1.88161.8834

1. 89531. 8969

1.90351.9050

1.85281.C5281.8557

1.88911.8917

1.91651.9188

1 94411.9459

1.95781. 9594

1.96601. 9675

Min

in .1.64871.6514

1.60401. 60S51.6134

1. 63091.6354

1.65901.6631

1.68811. 6914

1. 70251. 7054

1.71121. 7139

1.69331. 6979

1.72141.7256

1.75061.7539

1.76501. 7679

1. 77371.7764

1. 75581.7604

1.78381.7881

1.81311.8164

1. 82751. 8304

1.83621. 8389

1.81811. 8228

1.84631.8505

1. 87551. 8789

1.88991.8929

1. 89861.9013

1.83851.84331.8486

1.88051.8853

1.90871.9130

1.93801.9414

1.95241.9554

1.96111.9638

Toler-ance

in..0048.0036

.0134

.0089

.0067

.0083

.0063

.0075

.0057

.0060

.0045

.0053

.0040

.0048.0036

.0084

.0063

.0076

.0057

.0060

.0045

.0053

.0040

.0048

.0036

.0084

.0063

.0077

.0057

.0060

.0045

.0053

.0040

.0048

.0036

.0085

.0064

.0077

.0058

.0061

.0045

.0054

.0040

.0049

.0037

.0143

. 0095

. 007!

.0086

.0064

.0078

.0058

.0061

. 0045

.0054

.0040

.0049

.0037

MinorDiam-eter

Min

in.1.61621 6869

1 47401 47851 4734

1 52261 5271

1.57781 5820

1 63401 6373

1 66191 6648

1 67871.6814

I 58501 5896

1.64021 6444

1 69651 6998

1 72441 7273

1 74121 7439

1 64741 6521

1 70261 7069

1.75901 . 7623

1 78691.7898

1.80371 8064

1 70981.7145

1.76511 7693

1.82141 8248

1.84931 . 8523

1 . 866 11 8638

1 . 69521 . 70001 . 7053

1.77221.7770

1 .82751.8318

1 . 88391.8883

1.91181.9148

1 . 92861.9313

Internal

Class

2B3B

IB2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

2B3B

IB2B311

2B3B

2B3B

2B3B

2B3B

2B3B


Min

in .1.6331.6330

1.5341.5341.5340

1.5701.5700

1.6151.6150

1.6601.6600

1.6821.6820

1.6961.6960

1.6321.6320

1.6771. 6770

1.7221.7220

1.7451.7450

1.7581. 7580

1.6951.6950

1.7401.7400

1.7851.7850

1.8071.8070

1.8211.8210

1.7571. 7570

1.8021.8020

1.8471. 8470

1.8701.8700

1.8831.8830

1. 7591.7591.7590

1.8201.8200

1. 8651.8650

1.9101.9100

1.9321.9320

1. 9461.9460

Max

in.1.6451.6412

1.5681.5681.5575

1.6001. 5896

1.6401.6297

1.6781. 6698

1.6961.6908

1.7071. 7037

1.6631. 6521

1.7021.6922

1.7401.7323

1.7591.7533

1.7701.7662

1.7251. 7146

1.7651.7547

1.8031. 7948

1.8211. 8158

1.8321.8287

1.7881. 7771

1.8271. 8172

1.8651. 8573

1.8841. 8783

1.8951.8912

1.7951.7951.7861

1.8501. 8396

1.8901. 8797

1.9281.9198

1.9461.9408

1.9571. 9537


Min

in.1.65501.6550

1.62011. 62011.6201

1.64171.6417

1.66881.6688

1. 69591.6959

1.70941. 7094

1.71751.7175

1. 70421. 7042

1. 73131.7313

1. 75841.7584

1. 77191. 7719

1.78001.7800

1.76671.7667

1.79381. 7938

1.82091.8209

1. 83441. 8344

1.84251. 8425

1.82921.8292

1.85631.8563

1.88341.8834

1. 89691. 8969

1.90501.9050

1. 85571.85571.8557

1.89171.8917

1.91881.9188

1. 94591. 9459

1. 95941. 9594

1. 96751. 9675

Max

in.1. 66131.6597

1.63751.63171.6288

1. 65251.6498

1. 67861. 6762

1.70371.7017

1.71631.7146

1. 72381. 7222

1.71511.7124

1. 74121. 7387

1.76621.7642

1.77881. 7771

1.78631. 7847

1. 77771. 7749

1.80381. 8013

1. 82871. 8267

1. 84131.8396

1.84881. 8472

1.84031.8375

1.86631.8638

1. 89131.8893

1.90391.9021

1.91141.9098

1. 87431.86811.8650

1.90281.9000

1. 92891.9264

1.95381.9518

1.96641.9646

1. 97391.9723

Toler-ance

in..0063.0047

.0174

.0116

.0087

.0108

.0081

.0098

.0074

.0078

.0058

.0069

.0052

.0063

.0047

.0109

.0082

0099.0074

.0078

.0058

.0069

.0052

.0063

.0047

.0110

.0082

.0100

.0075

.0078

.0058

.0069

.0052

.0063

.0047

.0111

.0083

.0100

.0075

.0079

.0059

.0070

.0052

.0064

.0048

.0186

.0124

.0093

.0111

.0083

.0101

.0076

.0079

.0059

.0070

.0052

.0064

.0048

Majordiam-eter

Min

in.1.68751.6875

1.75001.75001.7500

1.75001.7500

r. 75001.7500

1.75001.7500

1.75001.7500

1.75001.7500

1. 81251. 8125

1.81251.8125

1.81251.8125

1.81251. 8125

1.81251. 8125

1.87501.8750

1.87501.8750

1.87501.8750

1.87501.8750

1.87501.8750

1. 93751. 9375

1. 93751. 9375

1. 93751. 9375

1. 93751. 9375

1. 93751. 9375

2.00002.00002.0000

2.00002.0000

2.00002.0000

2.00002.0000

2.00002. 0000

2.00002.0000

: For unfinished hot-rolled material.1 Revised minor diameter limits of classes IB and 2B are in process of ratification as Unified Standard.

22

Inch Thread Tolerances

Documents

Transcript of Inch Thread Tolerances