The Ring,retaining, cataloged under National Stock Number 5325-01-421-9507, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Ridge Tool Company. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Ring,retaining |
| FSC / FSG | 5325 — Fastening Devices (FSG 53) |
| Manufacturers | Ridge Tool Company (CAGE 50893) |
| Parameter | Value |
|---|---|
| NSN | 5325-01-421-9507 |
| Primary Part Number | 26937 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Ridge Tool Company |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 26937 PRIMARY | Ridge Tool Company (USA) |
NSN 5325-01-421-9507 is a Ring,retaining, manufactured by Ridge Tool Company, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-421-9507 has 1 manufacturer part number on file: 26937 (Ridge Tool Company).
1 possible match (shared part number, not a government interchangeability claim): 5920-01-571-4578. Verify interchangeability with system specifications before substitution.
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.