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DIN EN ISO 12474 Standard Dimensions for Hexagon socket head cap screws with metric fine pitch thread

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Technical History and International Equivalents of DIN EN ISO 12474

Equivalent standards: UNI EN ISO 12474 ISO 12474 NF EN ISO 12474 BS EN ISO 12474 UNI 5932

Locking screws with collar and vent

This European International Standard (DIN EN ISO 12474 and equivalents) specifies the characteristics of hexagon socket head cap screws with metric fine pitch thread with nominal thread diameters from 8 mm up to 36 mm and product grade A.

Dimensional Drawing and Technical Diagrams

1605_3233.jpg

Key Dimensions and Technical Parameters

Dimensions in mm - source DIN 12474

Publication date: 01/2011 - Replacement for DIN EN ISO21269 the 2007-07 standard
d thread size dk max dk min k max k min s nom

t min

 w min b
M 8x1 13 12.73 8 7.64 6 4 3.3 28
M 10x1-1.25 16 15.73 10 9.64 8 5 4 32
M 12x1.25-1.5 18 17.73 12 11.57 10 6 4.8 36
M 14x1.5 21 20.67 14 13.57 12 7 5.8 40
M 16x1.5 24 23.67 16 15.57 14 8 6.8 44
M 20x1.5 30 29.67 20 19.48 17 10 8.6 52
M 24x2 36 35.61 24 23.48 19 12 10.4 60
M 30x2 45 44.61 30 29.48 22 15.5 13.1 72
M 36x2 54 53.54 36 35.38 27 19 15.3 84

Din 12474 - ≈ weigth in kg x1000 pcs, (ρ=7,85 kg/dm3) - commercial items
d thread size M 8 M 10 M 12 M 14 M 16 M 20 M 24 M 30 M 36
nominal length l
12 10.9
16 12.1 20.9
20 13.4 22.9 32.1
25 15 25.4 35.7 48 71.3
30 16.9 27.9 39.3 53 77.8 128
35 18.9 30.4 42.9 58 84.4 139
40 20.9 32.9 46.5 63 91 150 270
45 22.9 36.1 50.1 68 97.6 161 285 500
50 24.9 39.3 54.5 73 106 172 300 527
55 26.9 42.5 58.9 78 114 183 316 554 870
60 28.9 45.7 63.4 84 122 194 330 581 910
65 31 48.9 67.38 90 130 205 345 608 950
70 33 52.1 71.3 96 138 216 363 635 990
80 37 58.5 80.2 108 154 241 399 690 1070
90 64.9 89.1 120 170 266 435 745 1150
100 71.2 98 132 186 291 471 800 1230
110 107 144 202 316 507 855 1310
120 116 156 218 341 543 910 1390
130 168 234 366 579 965 1470
140 180 250 391 615 1020 1550
150 266 416 651 1080 1630
160 282 441 687 1130 1710
180 491 759 1240 1870
200 541 831 1350 2030

Reproduced by permission of DIN Deutsches Institut für Normung e. V. The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from Beuth Verlag GmbH, Burggrafenstraße 6, 10787 Berlin, Germany.
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