Hexagon socket head cap screws ISO 4762 / DIN 912

Also known as an Allen screw or Allen bolt, or simply a cap screw. Socket Head Cap screws are a more modern alternative standard machine fastener to the standard hexagon headed bolt or setscrew, as found on much modern machinery. A hex key (otherwise known as an Allen key) is required to fit these fasteners. Our metric course threaded hexagon socket head cap screws conform to both ISO 4462 and DIN 912. These are the same standards for the full and fine thread versions of the socket head cap screws, which have their own categories on our website. These international standards specifies the tolerances and the variation of detailing allowable within this form of the screw type, for sizes M1.6 to and including M64 and of product grade A. These variations can be:

ISO 4762 covers A2-70, A4-70, and steel 8.8, 10.9 and 12.9. It doesn’t mention Duplex, A4-80 or nylon, the dimensions will be very similar.









HTML DataSheet






Dimensioanl Tolerance

ThreadM1.6M2M2.5M3M4M5M6M8M10M12M14M16M20M24M30M36M42M48M56M64
p0.350.40.450.50.70.811.251.51.75222.533.544.555.56
bref.1516171820222428323640445260728496108124140
dkmax3.003.804.505.507.008.5010.0013.0016.0018.0021.0024.0030.0036.0045.0054.0063.0072.0084.0096.00
max3.143.984.685.687.228.7210.2213.2716.2718.2721.3324.0030.3336.3945.3954.4663.4672.4684.5496.54
min2.863.624.325.326.788.289.7813.7315.7317.7320.6723.6729.6735.6144.6153.5462.5471.5483.4695.46
damax22.63.13.64.75.76.89.211.213.715.717.722.426.433.439.445.652.663.071.0
dsmax1.602.002.503.004.005.006.008.0010.0012.0014.0016.0020.0024.0030.0036.0042.0048.0056.0064.00
min1.461.862.362.863.824.825.827.789.7811.7313.7315.7319.6723.6729.6735.6741.6147.6155.5463.54
emin1.7331.7332.3032.8733.4434.5835.7236.8639.14911.42913.71615.99619.43721.73425.15430.85436.57141.13146.83152.531
lfmax0.340.510.510.510.60.60.681.021.021.451.451.452.042.042.892.893.063.915.955.95
kmax1.602.002.503.004.005.006.008.0010.0012.0014.0016.0020.0024.0030.0036.0042.0048.0056.0064.00
min1.641.862.362.863.824.825.77.649.6411.5713.5715.5719.4823.4829.4835.3841.3847.3855.2663.26
rmin0.10.10.10.10.20.20.250.40.40.60.60.60.80.8111.21.622
snom1.51.522.5345681012141719222732364146
max1.581.582.082.583.084.0955.146.148.17510.17512.21214.21217.23019.27522.27527.27532.33036.33041.3346.33
min1.521.522.022.523.024.0205.026.028.02510.02512.03214.03217.05019.06522.06527.06532.08036.08041.08046.080
tmin0.711.11.322.5345678101215.51924283438
vmax0.160.20.250.30.40.50.60.811.21.41.622.433.64.24.85.66.4
dwmin2.723.484.185.076.538.039.3812.3315.3317.2320.1723.1728.8734.8143.6152.5461.3470.3482.2694.26
wmin0.550.550.851.151.41.92.33.344.85.86.88.610.413.115.316.317.51922

HTML DataSheet

Thread Length Average Leway

mm+/-
2.5-30.2
4-60.24
8-100.29
12-160.35
20-300.42
35-500.5
55-800.6
90-1200.7
130-1800.8
200-2400.925
260-3000.05




































For further details, please refer to the relevant ISO/DIN standard document for this item.