Square Head Bolts

ASME B18.2.3.10* Dimensions of Square Head Bolts

*NA(No Commercial Useage)

Table 1 Dimensions of Square Head Bolts
All dimensions are in mm unless mentioned otherwise
Nominal Size
or Basic
Product
Diameter

Full-Size Body
Diameter,
E
Width Across Flats,
F
Width Across
Corners,
G
Head Height,
H
Radius of
Fillet, R
Nominal Thread
Length for Bolt
Lengths,
LT
inchmmMaxMinBasic
inch
MaxMinMaxMinBasic
inch
MaxMinMaxMin6 in. and
Shoter
Over
6 in.
11.00001.0220.9761 1/21.5001.4502.1211.99121/320.6840.6280.090.032.2 502.500
1 1/41.25001.2771.2231 7/81.8751.8122.6522.48927/320.8760.8120.090.032.7503.000
1 1/81.12501.1491.0981 11/161.6881.6312.3862.2393/40.7800.7200.090.032.5002.750
1 3/81.37501.4041.3452 1/162.0621.9942.9172.73829/320.9400.8720.090.033.0003.250
1/20.50000.5150.4823/40.7500.72 51.0610.99521/640.3480.3080.030.011.2501.500
1/40.25000.2600.2373/80.3750.3620.5300.49811/640.1880.1560.030.010.7501.000
3/40.75000.7680.7291 1/81.1251.0881.5911.494 1/20.5240.4760.060.021.7502.000
3/80.37500.3880.3609/160.5620.5440.7950.747 1/40.2680.2320.030.011.0001.250
5/80.62500.6420.60515/160.9380.9061.3261.244 27/640.4440.4000.060.021.5001.750
5/160.31250.3240.2981/20.5000.4840.7070.66513/640.220.1860.030.010.8751.125
7/80.87500.8950.8521 5/161.3121.2691.8561.742 19/320.620.5680.060.022.0002.2 50
7/160.43750.4520.4215/80.6250.6030.8840.828 19/640.3160.2780.030.011.1251.375
11/21.50001.5311.4702 1/42.2502.1753.1822.9861.0001.0360.9640.090.033.2503.500