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

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

Nominal Size or Basic Screw DiameterHead Diameter, ATotal Head Height, OHead Oval Height, FRecess Diameter, MRecess Depth, TRecess Width, NDriver SizeRecess Penetration Gaging Depth
MaxMinMaxMinMaxMinMaxMin
00.1260.1190.0320.0260.0120.0080.0780.0360.023Note 4Note 4
10.1530.1450.0410.0350.0150.0110.0920.0450.025Note 4Note 4
20.1810.1710.0500.0430.0180.0130.1120.0580.0280.0390.027
30.2080.1970.0590.0520.0220.0160.1300.0700.0310.0510.039
40.2350.2230.0680.0610.0250.0180.1470.0790.0340.0620.050
50.2630.2490.0780.0690.0290.0210.1650.0910.0360.0740.061
60.2900.2750.0870.0780.0320.0240.1830.1030.0390.0860.073
80.3440.3260.1050.0950.0390.0290.2160.1190.0440.1080.094
100.3990.3780.1230.1120.0450.0340.2390.1340.0470.1230.109
120.4540.4300.1410.1300.0520.0390.2840.1630.0540.1530.137
1/40.5250.4980.1650.1520.0610.0460.3200.1790.0590.1760.160
5/160.6560.6220.2090.1940.0770.0590.4030.2330.0720.2320.214
3/80.7880.7460.2530.2350.0940.0710.4680.2750.0810.2750.255

Notes :

  • Break sharp edge on head where spherical and conical surfaces meet.
  • 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.