ASME B18.2.3.1M Metric Hex Cap Screws

ASME B18.2.3.1M Metric Hex Cap Screws

Dimensions of ASME B18.2.3.1M Metric Hex Cap Screws

Nominal Screw Diameter, D, and Thread PitchBody Diameter Ds,Width Across Flats, SWidth Across Corners, EHead Height, KWrenching Height, K1Washer Face Thick, CWasher Face Diameter, Dw
MaxMinMaxMinMaxMinMaxMinMinMaxMinMin
M5 x 0.85.004.828.007.789.248.793.653.352.40.50.27.0
M6 x 16.005.8210.009.7811.5511.054.153.852.80.50.28.9
M8 x 1.258.007.7813.0012.7315.0114.385.505.103.70.60.311.6
M10 x 1.510.009.7815.0014.7317.3216.646.636.174.50.60.313.6
aM10 x 1.510.009.7816.0015.7318.4817.776.636.174.50.60.314.6
M12 x 1.7512.0011.7318.0017.7320.7820.037.767.245.20.60.316.6
M14 x 2.014.0013.7321.0020.6724.2523.359.098.516.20.60.319.6
M16 x 2.016.0015.7324.0023.6727.7126.7510.329.687.00.80.422.5
M20 x 2.520.0019.6730.0029.1634.6432.9512.8812.128.80.80.427.7
M24 x 324.0023.6736.0035.0041.5739.5515.4414.5610.50.80.433.2
M30 x 3.530.0029.6716.0045.0053.1250.8519.4817.9213.10.80.442.7
M36 x 436.0035.6155.0053.8063.5160.7923.3821.6215.80.80.451.1
M42 x 4.542.0041.3865.0062.9075.0671.7126.9725.0318.21.00.559.8
M48 x 548.0047.3875.0072.6086.6082.7631.0728.9321.01.00.569.0
M56 x 5.556.0055.2685.0082.2098.1593.7136.2033.8024.51.00.578.1
M64 x 664.0063.2695.0091.80109.70104.6541.3238.6828.01.00.587.2
M72 X 672.0071.26105.00101.40121.24115.6046.4543.5531.51.20.696.3
M80 x 680.0079.26115.00111.00132.72126.5451.5848.4235.01.20.6105.4
M90 x 690.0089.13

130.00

125.50150.11143.0757.7454.2639.21.20.6119.2
M100 x 6100.0099.13145.00140.00167.43159.6063.9060.1043.41.20.6133.0
This size with width across flats of 15mm is not standard. Unless specifically ordered, M10 hex cap screws with 16mm width across flats will be furnished.

  • All dimensions are in millimeters.
  • Transition Thread length X, includes the length of incomplete threads and tolerances on grip gaging length and body length. It is intended for calculation puposes