The Washer,lock, cataloged under National Stock Number 5310-01-550-8803, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is United States Department of the Navy Dba Naval Surface Warfare Center Panama City. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-550-8803 |
| Primary Part Number | 91475A020 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | United States Department of the Navy Dba Naval Surface Warfare Center Panama City |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 91475A020 PRIMARY | United States Department of the Navy Dba Naval Surface Warfare Center Panama City (USA) |
NSN 5310-01-550-8803 is a Washer,lock, manufactured by United States Department of the Navy Dba Naval Surface Warfare Center Panama City, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-550-8803 has 1 manufacturer part number on file: 91475A020 (United States Department of the Navy Dba Naval Surface Warfare Center Panama City).
2 possible matches (shared part number, not a government interchangeability claim): 5310-01-559-8240, 5310-01-586-5191. Verify interchangeability with system specifications before substitution.
Key specifications for 91475A020: Part Name Assigned by Controlling Agency: WASHER, LOCK; End Item Identification: 2590-01-544-7173. 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.