Detailed Comparison for PRE-LOADING (HSFG) Fasteners (BS ... · PDF fileDetailed Comparison...

Detailed Comparison for PRE-LOADING (HSFG) Fasteners (BS

EN 14399 and BS 4395)

The Fastener specialists to the Construction Industry

ContentsPage

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 IndustryTERMS 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 document 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 damage arising 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 or damages 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

Call Andrews Fasteners For All Your Fastener Needs 0113 246 9992Or Visit Our Website www.andrewsfasteners.co.uk

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 document 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 damage arising 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 or damages 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: A2 Page 1 of 7

1. IntroductionBS 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 Description Markings BS EN 14399 8.8 HR Standard Description Markings BS

4395 PT1BS 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 washers

BS EN 14399 PT 4

System HV. Hexagon bolt and nut assemblies

BS EN 14399 PT 5

Plain washers

BS EN 14399 PT 6

Plain chamfered washers

pr EN 14399 PT 7

System HR. Countersunk head bolt and nut 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



2. Table One – Dimensional Differences for Hexagon Bolts Additional Notes:Dimensions before plating d For lengths l nom ≤ 125 mm

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

BS 4395 PT1 approx 30� h lg max = l nom – b ls min = lg max – 5Pg dw max = s actual u Incomplete thread u ≤ 2Pj When l s 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 (b) 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 22.0M16 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 27.7M20 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 29.75M22 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 33.75M24 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 38.75M27 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 43.75M30 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 47.75M36 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 29.16M20 36.9 35.03 35.03 13.40 13.90 11.60 12.10 1.2 1.5 0.80 32 32 31.00 31.00M22 41.6 39.55 39.55 14.90 14.90 13.10 13.10 1.2 1.5 0.80 36 36 35.00 35.00M24 47.3 45.20 45.20 15.90 15.90 14.10 14.10 1.2 1.5 0.80 41 41 40.00 40.00M27 53.1 50.85 50.85 17.90 17.90 16.10 16.10 1.5 2.0 1.00 46 46 45.00 45.00M30 57.7 55.37 55.37 19.75 20.05 17.65 17.95 1.5 2.0 1.00 50 50 49.00 49.00M36 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



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 0.42M16 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 0.52M20 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 0.54M22 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 0.61M24 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 0.78M30 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 0.85M36 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



4. Table Three - Mechanical Property Differences for Hexagon BoltsHardness (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 32M16 94 500 92 100 640 635 130 000 130 000 22 25 32 34

(M18) 115 000 660 159 000 23 34M20 147 000 144 000 660 635 203 000 203 000 23 25 34 34M22 182 000 177 000 660 635 252 000 250 000 23 25 34 34M24 212 000 207 000 660 635 293 000 292 000 23 25 34 34M27 275 000 234 000 660 558 381 000 333 000 23 19 34 30M30 337 000 286 000 660 558 466 000 406 000 23 19 34 30M36 490 000 418 000 660 558 678 000 591 000 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/HRCNom. Dia. Proof Load (N)

min max Min max min max Min maxM12 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 36M16 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 36M20 245 000 245 000 233 175 353 310 88 30 260 175 353 310 24 88 HRB 36 30M22 303 000 303 000 233 175 353 310 88 30 260 175 353 310 24 88 HRB 36 30M24 353 000 353 000 233 175 353 310 88 30 260 175 353 310 24 88 HRB 36 30M27 459 000 459 000 233 175 353 310 88 30 260 175 353 310 24 88 HRB 36 30M30 561 000 561 000 233 175 353 310 88 30 260 175 353 310 24 88 HRB 36 30M36 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 impact test 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 where practical conditions such as material thickness do not warrant the usage of a larger size bolt than M12.



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 2.7M16 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 3.7M20 21.33 21.5 21.0 21.1 37 44 36.38 43.0 4.3 3.7 3.7 3.3M22 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 3.8M27 28.52 29.4 28.0 29.0 50 60 49.00 58.5 5.6 4.2 4.4 3.8M30 31.62 32.8 31.0 32.4 56 66 54.80 64.5 5.6 4.2 4.4 3.8M36 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

HRCmin max

38 45



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 150M12

(M14)M16

(M18)M20M22M24M27M30M36

LENGTH (MM)Nom. Dia. 160 170 180 190 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500M12

(M14)M16

(M18)M20M22M24M27M30M36



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

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

Tel: Fax:Email: REF: BS EN 14399

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