ASME B18.2.1 Hex Lag Screws

Dimensions of Hex Lag Screws

Nomianal Size or Basic product DiameterBody or Shoulder Diameter, EWidth Across Flats, FWidth Across Corners, GHead Height, HMinimum Shoulder Length, SRadius of Fillet, R
Max.Min.Max.Min.Max.Min.Max.Min.Max.Min.
No. 100.19000.1990.1780.2810.2710.3230.3090.1400.1100.0940.030.01
1/40.25000.2600.2370.4380.4250.5050.4840.1880.1500.0940.030.01
5/160.31250.3240.2980.5000.4840.5770.5520.2350.1950.1250.030.01
3/80.37500.3880.3600.5620.5440.6500.6200.2680.2260.1250.030.01
7/160.43750.4520.4210.6250.6030.7220.6870.3160.2720.1560.030.01
1/20.50000.5150.4820.7500.7250.8660.8260.3640.3020.1560.030.01
5/80.62500.6420.6050.9380.9061.0831.0330.4440.3780.3120.060.02
3/40.75000.7680.7291.1251.0881.2991.2400.5240.4550.3750.060.02
7/80.87500.8950.8521.3121.2691.5161.4470.6040.5310.3750.060.02
11.00001.0220.9761.5001.4501.7321.6530.7000.5910.6250.090.03
1 1/81.12501.1491.0981.6881.6311.9491.8590.7800.6580.6250.090.03
1 1/41.25001.2771.2231.8751.8122.1652.0660.8760.7490.6250.090.03