Fasteners
- 21/21.060/21.060.01 Fasteners in general
- 21/21.060/21.060.10 Bolts, screws, studs
- 21/21.060/21.060.20 Nuts
- 21/21.060/21.060.30 Washers, locking elements
- 21/21.060/21.060.40 Rivets
- 21/21.060/21.060.50 Pins, nails
- 21/21.060/21.060.60 Rings, bushes, sleeves, collars
- 21/21.060/21.060.70 Clamps and staples
- 21/21.060/21.060.99 Other fasteners