21 - MECHANICAL SYSTEMS AND COMPONENTS FOR GENERAL USE

Show all standards in this group (529)

ICS Field Number of standards
21.020 Characteristics and design of machines, apparatus, equipment 37
21.040 Screw threads 36
21.060 Fasteners 255
21.100 Bearings 73
21.120 Shafts and couplings 20
21.140 Seals, glands 7
21.160 Springs 17
21.180 Housings, enclosures, other machine parts 6
21.200 Gears 38
21.220 Flexible drives and transmissions 38
21.240 Rotary-reciprocating mechanisms and their parts 1
21.260 Lubrication systems 2