Technical supply conditions for threaded steel fasteners: Part 5 mechanical properties of fasteners made of carbon steel and alloy steel - Set screws and similar threaded fasteners with specified hardness classes - Coarse thread and fine pitch thread (Fourth Revision)
Technical supply conditions for threaded steel fasteners: Part 2 tolerances for fasteners - Bolts, screws, studs and nuts - Product grades a, b and c (Third Revision)