Dimensions of ASME B18.6.3 Combination Slotted Type 1 Cross Recessed Pan Head Machine Screws

Dimensions of ASME B18.6.3 Combination Slotted Type 1 Cross Recessed Pan Head Machine Screws

Nominal Size or Basic Screw DiameterHead Diameter, AHead Height, HHead Radius, RSlot Width, WSlot Depth, DRecess Diameter, MRecess Depth, TRecess Width, NDriver SizeRecess Penetration Gaging Depth, P
MaxMinMaxMinMaxMinMaxMinMaxMin
00.1160.1040.0440.0360.0050.0230.0160.0220.0130.0600.0300.01300.0320.014
10.1420.1300.0530.0440.0050.0260.0190.0270.0160.0670.0350.01400.0400.022
20.1670.1550.0620.0530.0100.0310.0230.0310.0200.0970.0500.01710.0520.034
30.1930.1800.0710.0620.0100.0350.0270.0360.0230.1050.0590.01910.0610.043
40.2190.2050.0800.0700.0100.0390.0310.0400.0270.1150.0690.01910.0710.053
50.2450.2310.0890.0790.0150.0430.0350.0450.0300.1520.0700.02820.0720.046
60.2700.2560.0970.0870.0150.0480.0390.0500.0330.1590.0780.02820.0800.055
80.3220.3060.1150.1050.0150.0540.0450.0580.0410.1750.0950.03020.0970.071
100.3730.3570.1330.1220.0200.0600.0500.0680.0480.1920.1120.03120.1130.089
120.4250.4070.1510.1390.0250.0670.0560.0770.0550.2520.1280.03430.1240.098
1/40.4920.4730.1750.1620.0350.0750.0640.0870.0630.2740.1480.03630.1440.118
5/160.6150.5940.2180.2030.0400.0840.0720.1060.0760.3430.1810.05940.1730.149
3/80.7400.7160.2610.2440.0400.0940.0810.1240.0900.3820.2210.06540.2130.190
7/160.8630.8380.3040.2860.0500.0940.0810.1420.1050.4060.2460.06840.2390.214
1/20.9870.9580.3480.3270.0550.1060.0910.1610.1180.4280.2670.07140.2600.235

Notes :

  • Where specifying nominal size in decimals, zeros preceding the decimals and in the fourth decimal place shall be omitted.
  • Due to the underfill of material caused by the combination recess, the minimum slot depths are approximately 10% lower than slotted pan heads.