ASTM A574 |
Covers the requirements for quenched and tempered alloy steel hexagon socket-head cap screws, 0.060 through 4 in. in diameter where high strength is required. |
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. |