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)
Technical supply conditions for threaded steel fasteners: Part 3 mechanical properties of fasteners made of carbon steel and bolts, screws and studs (Fifth Revision)
Technical supply conditions for threaded steel fasteners: Part 9 surface discontinuities section 1 bolts, screws and studs for general applications (Third Revision)