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Detailed Comparison forPRE-LOADING (HSFG) Fasteners (BS

EN 14399 and BS 4395)

The Fastener specialists to the Construction Industry

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Contents

Page

1. Introduction One

2. Dimensional Differences for Hexagon Bolts Two

3. Dimensional Differences for Hexagon Fullnuts Three

4. Mechanical Property Differences for Hexagon Bolts Four

5. Mechanical Property Differences for Hexagon Fullnuts Four

6. Dimensional Differences for Washers Five

7. Mechanical Property Differences for Washers Five

8. Sizes Available Six

9. Markings Seven

10. Fax Enquiry Eight

The Fastener specialists to the Construction Industry

TERMS OF USE: All information contained within this document is for information and demonstration purposes only and is provided on an "as is" basis. All reasonable care has been taken to ensure that any and all information contained within thisdocument is accurate and complete. Andrews Fasteners makes no warranties or representations of any kind in relation to this document. Andrews Fasteners and its directors, employees or other representatives exclude all liability for loss or damagearising out of or in connection with the use of this document (including without limitation any direct, indirect, special, punitive or consequential loss or damages, or any loss of income, profits, goodwill, data, contracts, use of money, or loss ordamages arising from or connected in any way to business interruption, and whether in tort, contract or otherwise). Please also see http://www.andrewsfasteners.co.uk/terms.htm Issue: A1

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TERMS OF USE: All information contained within this document is for information and demonstration purposes only and is provided on an "as is" basis. All reasonable care has been taken to ensure that any and all information contained within this documentis accurate and complete. Andrews Fasteners makes no warranties or representations of any kind in relation to this document. Andrews Fasteners and its directors, employees or other representatives exclude all liability for loss or damage arising out of or inconnection with the use of this document (including without limitation any direct, indirect, special, punitive or consequential loss or damages, or any loss of income, profits, goodwill, data, contracts, use of money, or loss or damages arising from or connectedin any way to business interruption, and whether in tort, contract or otherwise). Please also see http://www.andrewsfasteners.co.uk/terms.htm Issue: A2 Page 1 of 7

1. Introduction

BS 4395 (Specification for high strength friction grip bolts and associated nuts and washers for structural engineering) has been replaced by BS EN 14399

(High strength structural bolting assemblies for preloading). BS 4395 has three parts and BS EN 14399 has six parts (with a further three parts to be released)

Standard DescriptionMarkings BS EN

14399 8.8 HRStandard Description

Markings BS4395 PT1

BS EN

14399 PT 1

General requirements BS 4395 PT 1 General Grade

BS EN

14399 PT 2

Suitability test for preloading BS 4395 PT 2 Higher grade bolts and nuts and general

grade washers

BS EN

14399 PT 3

System HR. Hexagon bolt and nut

assemblies

BS 4395 PT 3 Higher grade bolts (waisted shank), nuts

and general grade washersBS EN

14399 PT 4

System HV. Hexagon bolt and nut

assemblies

BS EN14399 PT 5

Plain washers

BS EN

14399 PT 6

Plain chamfered washers

pr EN14399 PT 7

System HR. Countersunk head bolt andnut assemblies

pr EN

14399 PT 8

System HV. Hexagon fit bolt and nut

assemblies

pr EN

14399 PT 9

System HR or HV Bolt and nut

assemblies with direct tension indicators

We at Andrews Fasteners believe that where previously products were ordered to BS 4395 Part One (Bolt, Nut and Hard Flat Washer) they should now be ordered

to BS EN 14399 Part Three (HR 8.8) for the Bolts and Nuts and BS EN 14399 Part Six for the washer.

The following pages outline the general differences between the two different series of standards in terms of dimensions and mechanical properties in relation to

BS 4395 Part One and BS EN 14399 Parts 3 and 6.

If further information is required then please contact our technical department at Andrews.

The specification BS EN 14399 is shown on a BLUE background and for BS 4395 PT1 on a GREY background (as shown below).

BS EN 14399 BS 4395-1:1969

= NO REQUIREMENT (SIZE IN BRACKETS) = NON PREFERRED SIZES ALL FIGURES ARE IN MILLIMETRES

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TERMS OF USE: All information contained within this document is for information and demonstration purposes only and is provided on an "as is" basis. All reasonable care has been taken to ensure that any and all information contained within this documentis accurate and complete. Andrews Fasteners makes no warranties or representations of any kind in relation to this document. Andrews Fasteners and its directors, employees or other representatives exclude all liability for loss or damage arising out of or inconnection with the use of this document (including without limitation any direct, indirect, special, punitive or consequential loss or damages, or any loss of income, profits, goodwill, data, contracts, use of money, or loss or damages arising from or connectedin any way to business interruption, and whether in tort, contract or otherwise). Please also see http://www.andrewsfasteners.co.uk/terms.htm Issue: A2 Page 2 of 7

2. Table One Dimensional Differences for Hexagon BoltsAdditional Notes:Dimensions before plating d For lengths lnom 125 mm

a Incomplete thread u 2P e For lengths 125 mm < lnom 200 mmi BS EN 14399 15 to 30 f For lengths lnom > 200 mm

BS 4395 PT1 approx 30 h lg max = lnom b ls min = lgmax 5P

g dw max = s actual u Incomplete thread u 2Pj When ls min as calculated by the formula in h is less than 0,5d then its value

shall be 0,5d and l g max = l s min +3P.

Thread Thread Length ( ) Depth of washer face (c) Shank dia (ds) Dia. of Washer face (dw)Nom.

Dia. Pitch (P) Note d Note e Note f max. min.Transition dia (da)

max. max. min. max. min.

M12 1.75 1.75 30 30 36 49 0.8 0.4 0.4 15.2 14.70 12.70 12.70 11.30 11.30 g 22 20.1 19.91(M14) 2.00 34 40 0.8 0.4 17.2 14.70 13.30 g 22.0

M16 2.00 2.00 38 38 44 44 57 0.8 0.4 0.4 19.2 18.70 16.70 16.70 15.30 15.30 g 27 24.9 24.91

(M18) 2.50 42 48 0.8 0.4 21.7 18.70 17.30 g 27.7

M20 2.50 2.50 46 46 52 52 65 65 0.8 0.4 0.4 24.4 23.24 20.84 20.84 19.16 19.16 g 32 29.5 29.75

M22 2.50 2.50 50 50 56 56 69 69 0.8 0.4 0.4 26.4 25.24 22.84 22.84 21.16 21.16 g 36 33.3 33.75

M24 3.00 3.00 54 54 60 60 73 73 0.8 0.5 0.4 28.4 27.24 24.84 24.84 23.16 23.16 g 41 38.0 38.75

M27 3.00 3.00 60 60 66 66 79 79 0.8 0.5 0.4 32.4 30.84 27.84 27.84 26.16 26.16 g 46 42.8 43.75

M30 3.50 3.50 66 66 72 72 85 85 0.8 0.5 0.4 35.4 33.84 30.84 30.84 29.16 29.16 g 50 46.6 47.75

M36 4.00 4.00 78 78 84 84 97 97 0.8 0.4 0.4 42.4 40.00 37.00 37.00 35.00 35.00 g 60 55.9 57.75

Across corners (e) Head thickness (k) Radius under head (r) Across flats (s)Nom.

Dia. max. min. max. min. max. min. max. min.

M12 25.4 23.91 23.70 7.95 8.45 7.05 7.55 1.0 1.2 0.60 22 22 21.16 21.16

(M14) 26.17 9.25 8.35 1.2 24 23.16M16 31.2 29.56 29.30 10.75 10.45 9.25 9.55 1.0 1.2 0.60 27 27 26.16 26.16

(M18) 32.95 12.40 10.60 1.5 30 29.16

M20 36.9 35.03 35.03 13.40 13.90 11.60 12.10 1.2 1.5 0.80 32 32 31.00 31.00

M22 41.6 39.55 39.55 14.90 14.90 13.10 13.10 1.2 1.5 0.80 36 36 35.00 35.00

M24 47.3 45.20 45.20 15.90 15.90 14.10 14.10 1.2 1.5 0.80 41 41 40.00 40.00

M27 53.1 50.85 50.85 17.90 17.90 16.10 16.10 1.5 2.0 1.00 46 46 45.00 45.00

M30 57.7 55.37 55.37 19.75 20.05 17.65 17.95 1.5 2.0 1.00 50 50 49.00 49.00

M36 69.3 66.44 66.44 23.55 24.05 21.45 21.95 1.5 2.0 1.00 60 60 58.80 58.80

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TERMS OF USE: All information contained within this document is for information and demonstration purposes only and is provided on an "as is" basis. All reasonable care has been taken to ensure that any and all information contained within this documentis accurate and complete. Andrews Fasteners makes no warranties or representations of any kind in relation to this document. Andrews Fasteners and its directors, employees or other representatives exclude all liability for loss or damage arising out of or inconnection with the use of this document (including without limitation any direct, indirect, special, punitive or consequential loss or damages, or any loss of income, profits, goodwill, data, contracts, use of money, or loss or damages arising from or connectedin any way to business interruption, and whether in tort, contract or otherwise). Please also see http://www.andrewsfasteners.co.uk/terms.htm Issue: A2 Page 3 of 7

3. Table Two Dimensional Differences for Hexagon Nuts

Additional Notes:

The dimensions apply before plating.

Washer face is optional with BS EN 14399 product but not with

BS 4395 PT1 product.a BS EN 14399 15 to 30. BS 4395 PT1 approx 30.

b BS EN 14399 100 to 130.

d dw max = s actual

Pitch Across flats (s) Across corners (e) Thickness (m)Depth of washer

face (c)

Diameter of washer

face (dw)

Tolerance on

squareness (t)Nom.

Dia.P max min max min max min max min max min max

M12 1.75 1.75 22 22 21.16 21.16 25.4 23.91 23.82 10.8 11.55 10.37 10.45 0.8 0.4 0.4 d 22 20.10 19.91 0.38 0.37

(M14) 2.00 24 23.16 27.12 12.8 12.10 0.8 0.4 d 21.86 0.42

M16 2.00 2.00 27 27 26.16 26.16 31.2 29.56 29.30 14.8 15.55 14.10 14.45 0.8 0.4 0.4 d 27 24.90 24.91 0.47 0.46

(M18) 2.50 30 29.16 32.95 15.8 15.10 0.8 0.4 d 27.70 0.52

M20 2.50 2.50 32 32 31.00 31.00 36.9 35.03 35.03 18.0 18.55 16.90 17.45 0.8 0.4 0.4 d 32 29.50 29.75 0.58 0.54

M22 2.50 2.50 36 36 35.00 35.00 41.6 39.55 39.55 19.4 19.65 18.10 18.35 0.8 0.4 0.4 d 36 33.30 33.75 0.63 0.61

M24 3.00 3.00 41 41 40.00 40.00 47.3 45.20 45.20 21.5 22.65 20.20 21.35 0.8 0.5 0.4 d 41 38.00 38.75 0.72 0.70M27 3.00 3.00 46 46 45.00 45.00 53.1 50.85 50.85 23.8 24.65 22.50 23.35 0.8 0.5 0.4 d 46 42.80 43.75 0.80 0.78

M30 3.50 3.50 50 50 49.00 49.00 57.7 55.37 55.37 25.6 26.65 24.30 25.35 0.8 0.5 0.4 d 50 46.60 47.75 0.87 0.85

M36 4.00 4.00 60 60 58.80 58.80 69.3 66.44 66.44 31.0 31.80 29.40 30.20 0.8 0.5 0.4 d 60 55.90 57.75 1.05 1.03

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TERMS OF USE: All information contained within this document is for information and demonstration purposes only and is provided on an "as is" basis. All reasonable care has been taken to ensure that any and all information contained within this documentis accurate and complete. Andrews Fasteners makes no warranties or representations of any kind in relation to this document. Andrews Fasteners and its directors, employees or other representatives exclude all liability for loss or damage arising out of or inconnection with the use of this document (including without limitation any direct, indirect, special, punitive or consequential loss or damages, or any loss of income, profits, goodwill, data, contracts, use of money, or loss or damages arising from or connectedin any way to business interruption, and whether in tort, contract or otherwise). Please also see http://www.andrewsfasteners.co.uk/terms.htm Issue: A2 Page 4 of 7

4. Table Three - Mechanical Property Differences for Hexagon Bolts

Hardness (HRC)Nom.

Dia.Proof Load (N)

0.2 Proof Stress

N/mm

Wedge Strength (N)

min. min max

M12 50 700 49 400 640 635 70 000 69 600 22 25 32 34

(M14) 68 800 640 95 500 22 32

M16 94 500 92 100 640 635 130 000 130000 22 25 32 34

(M18) 115 000 660 159 000 23 34

M20 147 000 144 000 660 635 203 000 203000 23 25 34 34

M22 182 000 177 000 660 635 252 000 250000 23 25 34 34

M24 212 000 207 000 660 635 293 000 292000 23 25 34 34M27 275 000 234 000 660 558 381 000 333000 23 19 34 30

M30 337 000 286 000 660 558 466 000 406000 23 19 34 30

M36 490 000 418 000 660 558 678 000 591000 23 19 34 30

5. Table Four - Mechanical Property Differences for Hexagon Nuts (Hardness values shall only be used if the Nut can not be Proof

Load tested)

Hardness (FOR NON-HOT DIP GALVANISED) Hardness (FOR HOT DIP GALVANISED)

HV HRB HRC HV HRB/HRC

Nom.Dia.

Proof Load (N)

min max Min max min max Min max

M12 84 300 84 300 200 175 302 310 88 30 260 175 353 310 24 88 HRB 36 30

(M14) 115 000 200 302 260 353 24 36

M16 157 000 157 000 200 175 302 310 88 30 260 175 353 310 24 88 HRB 36 30

(M18) 192 000 233 353 260 353 24 36

M20 245 000 245 000 233 175 353 310 88 30 260 175 353 310 24 88 HRB 36 30

M22 303 000 303 000 233 175 353 310 88 30 260 175 353 310 24 88 HRB 36 30

M24 353 000 353 000 233 175 353 310 88 30 260 175 353 310 24 88 HRB 36 30

M27 459 000 459 000 233 175 353 310 88 30 260 175 353 310 24 88 HRB 36 30

M30 561 000 561 000 233 175 353 310 88 30 260 175 353 310 24 88 HRB 36 30

M36 817 000 817 000 233 175 353 310 88 30 260 175 353 310 24 88 HRB 36 30

Additional Notes:

1. For BS EN 14399 product an impacttest at -20 degrees and a suitability test

are required (BS EN 14399-2).

2 M12 products should only be used for

the lighter type construction wherepractical conditions such as material

thickness do not warrant the usage of a

larger size bolt than M12.

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TERMS OF USE: All information contained within this document is for information and demonstration purposes only and is provided on an "as is" basis. All reasonable care has been taken to ensure that any and all information contained within this documentis accurate and complete. Andrews Fasteners makes no warranties or representations of any kind in relation to this document. Andrews Fasteners and its directors, employees or other representatives exclude all liability for loss or damage arising out of or inconnection with the use of this document (including without limitation any direct, indirect, special, punitive or consequential loss or damages, or any loss of income, profits, goodwill, data, contracts, use of money, or loss or damages arising from or connectedin any way to business interruption, and whether in tort, contract or otherwise). Please also see http://www.andrewsfasteners.co.uk/terms.htm Issue: A2 Page 5 of 7

6. Table Five - Dimensional Differences for Washers

Inside diameter (d1) Outside diameter (d2) Thickness (h)Nom.Dia. max. min. max. min. max. min.

M12 13.27 13.8 13.0 13.4 24 30 23.48 29.0 3.3 2.8 2.7 2.4

(M14) 15.27 15.0 28 27.48 3.3 2.7

M16 17.27 17.8 17.0 17.4 30 37 29.48 36.0 4.3 3.4 3.7 3.0

(M18) 19.33 19.0 34 33.38 4.3 3.7

M20 21.33 21.5 21.0 21.1 37 44 36.38 43.0 4.3 3.7 3.7 3.3

M22 23.33 23.4 23.0 23.0 39 50 38.38 48.5 4.3 4.2 3.7 3.8M24 25.33 26.4 25.0 26.0 44 56 43.38 54.5 4.3 4.2 3.7 3.8

M27 28.52 29.4 28.0 29.0 50 60 49.00 58.5 5.6 4.2 4.4 3.8

M30 31.62 32.8 31.0 32.4 56 66 54.80 64.5 5.6 4.2 4.4 3.8

M36 37.62 38.8 37.0 38.4 66 85 64.80 83.5 6.6 4.6 5.4 4.2

Additional Notes:

1. BS EN 14399-6 Washers do not have the three nibs which BS 4395 washers have.2. BS EN 14399-6 Washers have a 45 degree chamfer on the outside and inside of the washer.

7. Table Six - Mechanical Property Difference for Washers

HARDNESSHV

min max300 370

HRC

min max

38 45

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TERMS OF USE: All information contained within this document is for information and demonstration purposes only and is provided on an "as is" basis. All reasonable care has been taken to ensure that any and all information contained within this documentis accurate and complete. Andrews Fasteners makes no warranties or representations of any kind in relation to this document. Andrews Fasteners and its directors, employees or other representatives exclude all liability for loss or damage arising out of or inconnection with the use of this document (including without limitation any direct, indirect, special, punitive or consequential loss or damages, or any loss of income, profits, goodwill, data, contracts, use of money, or loss or damages arising from or connectedin any way to business interruption, and whether in tort, contract or otherwise). Please also see http://www.andrewsfasteners.co.uk/terms.htm Issue: A2 Page 6 of 7

8. Table Seven - Sizes Available

BS EN 14399-3:2005 BS EN 14399 & BS 4395-1:1969 BS 4395-1:1969

LENGTH (MM)Nom.Dia. 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 110 120 130 140 150

M12

(M14)

M16(M18)

M20

M22

M24

M27

M30

M36

LENGTH (MM)Nom.

Dia. 160 170 180 190 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500

M12

(M14)

M16(M18)

M20

M22

M24

M27

M30

M36

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TERMS OF USE: All information contained within this document is for information and demonstration purposes only and is provided on an "as is" basis. All reasonable care has been taken to ensure that any and all information contained within this documentis accurate and complete. Andrews Fasteners makes no warranties or representations of any kind in relation to this document. Andrews Fasteners and its directors, employees or other representatives exclude all liability for loss or damage arising out of or inconnection with the use of this document (including without limitation any direct, indirect, special, punitive or consequential loss or damages, or any loss of income, profits, goodwill, data, contracts, use of money, or loss or damages arising from or connectedin any way to business interruption, and whether in tort, contract or otherwise). Please also see http://www.andrewsfasteners.co.uk/terms.htm Issue: A2 Page 7 of 7

9. Table Eight Markings

Markings BS EN 14399 8.8 HR/H Markings BS 4395 PT1

Hexagon Bolt

Hexagon Fullnut

Plain Chamfered

Washer

Hexagon Bolt

Hexagon Fullnut

Hard Flat Washer

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FAX ENQUIRY URGENTTo: Sales, Andrews Fasteners Ltd Fax: 0113 243 64 63

From: Company:

Tel: Fax:

Email: REF: BS EN 14399

REQUIREMENTS / COMMENTS