asme-b18-6-3-type-2-cross-recessed-round-head-machine-screws

Dimensions of ASME B18.6.3 Type 2 Cross Recessed Round Head Machine Screws

Nominal Size or Basic Screw DiameterHead Diameter, AHead Height, HRecess Diameter, MRecess Depth, TRecess Width, NDriver SizeRecess Penetration Gaging Depth
MaxMinMaxMinMaxMin
00.1130.0990.0530.0430.0680.0300.020Note 3Note 3
10.1380.1220.0610.0510.0840.0400.022Note 3Note 3
20.1620.1460.0690.0590.1000.0500.0250.0300.020
30.1870.1690.0780.0670.1160.0610.0270.0410.030
40.2110.1930.0860.0750.1310.0700.0290.0510.039
50.2360.2170.0950.0830.1470.0790.0320.0620.050
60.2600.2400.1030.0910.1620.0890.0340.0720.060
80.3090.2870.1200.1070.1940.1100.0390.0930.080
100.3590.3340.1370.1230.2250.1250.0430.1140.099
120.4080.3820.1530.1390.2560.1460.0480.1350.120
1/40.4720.4430.1750.1600.2970.1720.0540.1620.146
5/160.5900.5570.2160.1980.3720.2130.0650.2120.194
3/80.7080.6700.2560.2370.4470.2620.0760.2620.242
7/160.7500.7070.3280.3070.4730.2790.0800.2790.258
1/20.8130.7660.3550.3320.5130.3040.0860.3060.282
9/160.9380.8870.4100.3850.5930.3570.0980.3590.334
5/81.0000.9440.4380.4110.6320.3820.1030.3860.358
3/41.2501.1850.5470.5160.6320.3820.1030.3860.358

Notes :

  • Where specifying nominal size in decimals, zeros preceding the decimals and in the fourth decimal place shall be omitted.
  • Point same on all drivers.
  • Not practical to gage.