FSC Group 53: Hardware and Abrasives
- 5305: Screws
- 5306: Bolts
- 5307: Studs
- 5310: Nuts and Washers
- 5315: Nails, Machine Keys, and Pins
- 5320: Rivets
- 5325: Fastening Devices
- 5330: Packing and Gasket Materials
- 5331: O-Ring
- 5335: Metal Screening
- 5340: Hardware, Commercial
- 5341: Brackets
- 5342: Hardware, Weapon System
- 5345: Disks and Stones, Abrasive
- 5350: Abrasive Materials
- 5355: Knobs and Pointers
- 5360: Coil, Flat, Leaf, and Wire Springs
- 5365: Bushings, Rings, Shims, and Spacers
- 53GP: Hardware and Abrasives -- General