FSC 5365 Bushings, Rings, Shims, and Spacers

FSC 5365 is the U.S. Federal Supply Class for Bushings, Rings, Shims, and Spacers, in Federal Supply Group 53 (Hardware and Abrasives). Aviation Parts Executive lists 612 parts whose part numbers carry a National Stock Number (NSN) in this class. Search any NSN or NIIN on our site to open the part.

All items, including specially designed, will be classified in this FSC. A. A bushing is cylindrical in shape, hollow, and designed primarily to be inserted into a hole to reduce the effective inside diameter of the hole, and to protect the body structure about the hole from damage resulting from stress, strain, and vibration. B. A ring is cylindrical in shape, usually flat with a center hole. Rings are multi-applicational. See specific item name for designated usage. C. A shim is a thin, sometimes tapered, piece of material used to fill in space between things. See specific item name for dimensional parameters. D. A spacer is a device for holding two members at a given distance from each other.

Includes externally threaded rings; keyed and serrated lock rings; dee rings; instrument retaining rings; shim sets and assortments; plate spacers; ring spacers; sleeve spacers; stepped spacers; spacer sets and assortments; sleeve bushings; machine threaded bushings; machine threaded plugs.

Excludes sleeve bearings (FSC 3120); pipe threaded plugs (FSC 4730); piston rings (FSC 2520, 2805, 2810, 2815, 2825, 2990, 3040, 4310, and 4820); retaining rings (FSC 5325); shim stock (FSC 9515).

Our Parts In FSC 5365 (612)

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NSNs, item names and Federal Supply Class descriptions come from the Defense Logistics Agency's public Federal Logistics Information System data (PUB LOG, October 27, 2026 release). We show an NSN only when the government record lists our part number under the same manufacturer (CAGE code). Confirm the NSN and part number on your solicitation before you order.