Size: 3/8 inch-16 X 3 inch. Hex (Allen) Drive. Installs using an Allen wrench. Can be used in tight spaces where there may not be room for a socket tool or wrench. Often used in machinery, tools and dies. Thread Type: Coarse, Thread Class: UNC-3A, Point Style: Blunt. Specification(s) Met: ASME B18.3 and ASTM A574.
