Special Features:

Case harden 0.030 to 0.040 deep; rockwell hardness c58 to c62; 0.180 diameter pin by 0.500 lg welded on inside diameter of wrench opening on 2.400 c to c of pins

Properties:

A tool on which are located one or more pins, lugs, holes, keyways, or hooks, designed to engage matching holes, slots, or projections on a coupling, nut, or the like; for exerting a torsional force, concentrated at a point or points of a mating part, tending to turn the mating part about an axis. The drive end may have a hole for a separate straight bar used as a handle. Excludes wrench, bung.