DIN 912 Socket Head Cap Screw Dimensions
Size (d1) Thread Pitch Head Diameter (d2) Head Height (k) Key Size (s) Key Engagement (t)
Min Max Min Max Min Max Nominal
M1.4 0.30 2.46 2.74 1.26 1.40 1.320 1.360 0.6
M1.6 0.35 2.86 3.14 1.46 1.60 1.520 1.560 0.7
M2 0.40 3.62 3.98 1.86 2.00 1.520 1.560 1
M2.5 0.45 4.32 4.68 2.36 2.50 2.020 2.060 1.1
M3 0.50 5.32 5.68 2.86 3.00 2.520 2.580 1.3
M4 0.70 6.78 7.22 3.82 4.00 3.020 3.080 2
M5 0.80 8.28 8.72 4.82 5.00 4.020 4.095 2.5
M6 1.00 9.78 10.22 5.70 6.00 5.020 5.140 3
M8 1.25 12.73 13.27 7.64 8.00 6.020 6.140 4
M10 1.50 15.73 16.27 9.64 10.00 8.025 8.175 5
M12 1.75 17.73 18.27 11.57 12.00 10.025 10.175 6
M14 2.00 20.67 21.33 13.57 14.00 12.032 12.212 7
M16 2.00 23.67 24.33 15.57 16.00 14.032 14.212 8
M18 2.50 26.67 27.33 17.57 18.00 14.032 14.212 9
M20 2.50 29.67 30.33 19.48 20.00 17.050 17.230 10
M22 2.50 32.61 33.39 21.48 22.00 17.050 17.230 11
M24 3.00 35.61 36.39 23.48 24.00 19.050 19.275 12
M27 3.00 39.61 40.39 26.48 27.00 19.065 19.275 13.5
M30 3.50 44.61 45.39 29.48 30.00 22.065 22.275 15.5
M33 3.50 49.61 50.39 32.38 33.00 24.065 24.275 18
M36 4.00 53.54 54.56 35.38 36.00 27.065 27.275 19
M39 4.00 57.54 58.46 38.38 39.00 27.065 27.275 22
M42 4.50 62.54 63.46 41.38 42.00 32.080 32.330 24
M45 4.50 66.54 67.46 44.38 45.00 32.080 32.330 24
M48 5.00 71.54 72.46 47.38 48.00 36.080 36.330 28
M56 5.50 93.46 84.54 55.26 56.00 41.080 41.330 34
M64 6.00 95.46 96.54 63.26 64.00 46.080 46.330 38
M72 6.00 107.46 108.54 71.26 72.00 55.100 55.400 43
M80 6.00 119.46 120.54 79.26 80.00 65.100 65.400 48
M90 6.00 134.37 135.63 89.13 90.00 75.100 75.400 54
M100 6.00 149.37 150.63 99.13 100 85.120 85.470 60
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