Socket Cap, Set Screws, Hex and Spline Keys (Inch Series)

underhead fillet on socket head cap screws, add cover-age on drilled socket head cap screws, lengthen the thread undercut on socket head shoulder screws, and extend the coverage on the latter to include the 11⁄ 2 in., 13⁄ 4 in., and 2 in. sizes. A proposal incorporating these changes together with numerous editorial corrections

  Sockets, Socket cap