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  4. DIN 931 Hex Head Bolts

DIN 931 Hex Head Bolts

DIN 931 Equivalents

ISO 4014 PN 82101 UNI 5737 CSN 21101

DIN 931 Hex Head Bolt
Hexagon Head Bolts With Shank

DIN 931 Dimensions

OM. THREAD DIAMETER (d) THREAD PITCH (coarse) Thread length (b) for Nom. length (l) washer face ds e min. Nom k Max. = Nom. Dimensions s
125 mm & shorter 125 – 200 mm 200 mm & longer min. max. Product Grade Dimensions min. max. min.
max. min. A B
M 3 0.5 12     0.15 0.4 3 2.86 6.01   2 1.88 2.12 5.5 5.32
M 4 0.7 14     0.15 0.4 4 3.82 7.66   2.8 2.68 2.92 7 6.78
M 5 0.8 16 22   0.15 0.5 5 4.82 8.79 8.63 3.5 3.35 3.65 8 7.78
M 6 1 18 24   0.15 0.5 6 5.82 11.05 10.89 4 3.85 4.15 10 9.78
M 7 1 20 26   0.15 0.5 7 6.78 12.12 11.94 4.8 4.65 4.95 11 10.73
M 8 1.25 22 28   0.15 0.6 8 7.78 14.38 14.2 5.3 5.15 5.45 13 12.73
M 10 1.5 26 32 45 0.15 0.6 10 9.78 18.9   6.4 6.22 6.58 17 16.73
M 12 1.75 30 36 49 0.15 0.6 12 11.73 21.1   7.5 7.32 7.68 19 18.67
M 14 2 34 40 53 0.15 0.6 14 13.73 24.49   CO CO 8.62 8.98 22 21.67
M 16 2 38 44 57 0.2 0.8 16 15.73 26.75 26.17 10 9.82 10.18 24 23.67
M 18 2.5 42 48 61 0.2 0.8 18 17.73 30.14 29.56 11.5 11.28 11.72 27 26.67
M 20 2.5 46 52 65 0.2 0.8 20 19.67 33.53 32.95 12.5 12.28 12.72 30 29.67
M 22 2.5 50 56 69 0.2 0.8 22 21.67 35.72 35.03 14 13.78 14.22 32 31.61
M 24 3 54 60 73 0.2 0.8 24 23.67 39.98 39.55 15 14.78 15.22 36 35.38
M 27 3 60 66 79 0.2 0.8 27 26.67   45.2 17 16.65 17.35 41 40
M 30 3.5 66 72 85 0.2 0.8 30 29.67   50.85 18.7 18.28 19.12 46 45
M 33 3.5 72 78 91 0.2 0.8 33 32.61   55.37 21 20.58 21.42 50 49
M 36 4 78 84 97 0.2 0.8 36 35.61   60.79 22.5 22.08 22.92 55 53.8
M 39 4 84 90 103 0.3 1 39 38.61   66.44 25 24.58 25.42 60 58.8
M 42 4.5 90 96 109 0.3 1 42 41.61   72.02 26 25.58 26.42 65 63.8
M 45 4.5 96 102 115 0.3 1 45 44.38   76.95 28 27.58 28.42 70 68.1
M 48 5 102 108 121 0.3 1 48 47.38   82.6 30 29.58 30.42 75 73.1