Hex socket dimensions are shown in the following chart according to ASME B18.3-2003 standard. All dimensions are in inches.
Some important notes from the ASME B18.3-2003:
- Following dimensions of sockets apply before plating.
- Sockets up to and including 1 in. nominal size shall be checked with the hexagon socket gages and gaging specified in Appendix of ASME B18.3.