MECHANICAL SYSTEMS AND COMPONENTS FOR GENERAL USE

21.010

224 standards

21.020

Characteristics and design of machines, apparatus, equipment

745 standards

21.040

Screw threads

1,824 standards

21.040.01

Screw threads in general

140 standards

21.040.10

Metric screw threads

970 standards

21.040.20

Inch screw threads

157 standards

21.040.30

Special screw threads

400 standards

21.060

Fasteners

14,052 standards

21.060.01

Fasteners in general

3,043 standards

21.060.10

Bolts, screws, studs

4,972 standards

21.060.20

Nuts

1,915 standards

21.060.30

Washers, locking elements

1,296 standards

21.060.40

Rivets

726 standards

21.060.50

Pins, nails

938 standards

21.060.60

Rings, bushes, sleeves, collars

479 standards

21.060.70

Clamps and staples

274 standards

21.060.99

Other fasteners

178 standards

21.080

Hinges, eyelets and other articulated joints

77 standards

21.100

Bearings

3,992 standards

21.100.01

Bearings in general

94 standards