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

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

Nominal Size or Basic Screw DiameterHead Diameter, AHead Side Height, HTotal Head Height, ORecess Diameter, MRecess Depth, TRecess Width, NDriver SizeRecess Penetration Gaging Depth
MaxMinMaxMinMaxMinMaxMin
00.0960.0830.0430.0380.0550.0470.0670.0670.020Note 4Note 4
10.1180.1040.0530.0450.0660.0580.0830.0830.022Note 4Note 4
20.1400.1240.0620.0530.0830.0660.0990.0990.0240.0300.019
30.1610.1450.0700.0610.0950.0770.1150.1150.0270.0410.029
40.1830.1660.0790.0690.1070.0880.1300.1300.0290.0510.039
50.2050.1870.0880.0780.1200.1000.1470.1470.0310.0620.049
60.2260.2080.0960.0860.1320.1110.1630.1630.0340.0730.060
80.2700.2500.1130.1020.1560.1330.1940.1950.0390.0940.080
100.3130.2920.1300.1180.1800.1560.2270.2270.0430.1150.101
120.3570.3340.1480.1340.2050.1780.2590.2590.0480.1370.121
1/40.4140.3890.1700.1550.2370.2070.2990.2990.0540.1630.147
5/160.5180.4900.2110.1940.2950.2620.3770.3770.0660.2150.197
3/80.6220.5900.2530.2330.3550.3150.4540.4540.0770.2660.246
7/160.6250.5890.2650.2420.3680.3210.4540.4540.0770.2660.246
1/20.7500.7100.2970.2730.4120.3620.5470.5470.0910.3280.305
9/160.8120.7680.3360.3080.4660.4100.5920.5920.0970.3590.333
5/80.8750.8270.3750.3450.5210.4610.5920.5920.0970.3590.333
3/41.0000.9450.4410.4060.6120.5420.5920.5920.0970.3590.333

Notes :

  • A slight rounding of the edges at the periphery of the head shall be permissible provided the diameter of the bearing circle is equal to no less than 90% of the specified minimum head diameter.
  • Where specifying nominal size in decimals, zeros preceding the decimals and in the fourth decimal place shall be omitted.
  • Point same on all drivers.
  • No practical to gage.