Dimensions of ASME B18.6.3 Slotted Truss Head Machine Screws

Dimensions of ASME B18.6.3 Slotted Truss Head Machine Screws

Nominal Size or Basic Screw DiameterHead Diameter, AHead Height, HHead Radius, R, Max.Slot Width, JSlot Depth, T
MaxMinMaxMinMaxMinMaxMin
00000.0490.0430.0140.0100.0320.0090.0050.0090.005
0000.0770.0710.0220.0180.0510.0130.0090.0130.009
000.1060.0980.0300.0240.0700.0170.0100.0180.012
00.1310.1190.0370.0290.0870.0230.0160.0220.014
10.1640.1490.0450.0370.1070.0260.0190.0270.018
20.1940.1800.0530.0440.1290.0310.0230.0310.022
30.2260.2110.0610.0510.1510.0350.0270.0360.026
40.2570.2410.0690.0590.1690.0390.0310.0400.030
50.2890.2720.0780.0660.1910.0430.0350.0450.034
60.3210.3030.0860.0740.2110.0480.0390.0500.037
80.3840.3640.1020.0880.2540.0540.0450.0580.045
100.4480.4250.1180.1030.2830.0600.0500.0680.053
120.5110.4870.1340.1180.3360.0670.0560.0770.061
1/40.5730.5460.1500.1330.3750.0750.0640.0870.070
5/160.6980.6660.1830.1620.4570.0840.0720.1060.085
3/80.8230.7870.2150.1910.5380.0940.0810.1240.100
7/160.9480.9070.2480.2210.6190.0940.0810.1420.116
1/21.0731.0280.2800.2500.7010.1060.0910.1610.131
9/161.1981.1490.3120.2790.7830.1180.1020.1790.146
5/81.3231.2690.3450.3090.8630.1330.1160.1960.162
3/41.5731.5110.4100.3681.0240.1490.1310.2340.182

Notes :

  • Where specifying nominal size in decimals, zeros preceding the decimal and in the fourth decimal place shall be omitted.