| ASTM F835 |
This specification covers the requirements for quenched and tempered alloy steel hexagon socket button (SBHCS) 0.060 through 0.625 thread sizes and flat countersunk (SFHCS) 0.060 through 1.5 thread sizes head cap screws having material properties for high-strength requirements. |
| ASME B18.3 |
Covers the complete general and dimensional data for various types of hexagon socket cap screws, shoulder screws, set screws, and hexagon keys recognized as an American National Standard. |
| ASME B1.1 UNC & UNF Class 2A |
Specifies the thread form, series, class, allowance, tolerance, and designation for unified screw threads. |