The Ring,retaining, cataloged under National Stock Number 5325-00-508-4675, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-508-4675 |
| Primary Part Number | 21-381-1 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products |
| Status | ACTIVE |
| Material Hardness Rating | 42.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM |
| Usage Design | EXTERNAL |
| End Style | VERTEX OUTSIDE PERIPHERY |
| Material Document and Classification | QQ-S-633, AMEND. 2, FS-1065 FED SPEC SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | ROUNDED CORNERS |
| Outside Diameter | 1.594 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN |
| Major Thickness | 0.091 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN |
| Inside Diameter | 1.406 INCHES MINIMUM AND 1.437 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | STRAIGHT GAP |
| Material | STEEL COMP 1065 |
| 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 |
|---|---|
| 21-381-1 PRIMARY | Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products (USA) |
| 7520993 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 2339T2 | 5/9 Secondary reference Diamond Reo Truck Co |
| 5365005084675 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 914363 | 5/9 Secondary reference Sasco Inc Canadian Div |
| 21-381-1 | 5/2 Secondary reference U.S. Government activity |
NSN 5325-00-508-4675 is a Ring,retaining, manufactured by Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-508-4675 has 2 manufacturer part numbers on file: 21-381-1 (Dana Commercial Vehicle Manufacturing, Llc Dba Dana Commercial Vehicle Products), 7520993 (U S Army Tank Automotive Command Amsta-Im-Mm).
1 possible match (shared part number, not a government interchangeability claim): 5930-00-820-7167. Verify interchangeability with system specifications before substitution.
Key specifications for 21-381-1: Material Hardness Rating: 42.0 ROCKWELL C MINIMUM AND 47.0 ROCKWELL C MAXIMUM; Usage Design: EXTERNAL; End Style: VERTEX OUTSIDE PERIPHERY; Material Document and Classification: QQ-S-633, AMEND. 2, FS-1065 FED SPEC SINGLE MATERIAL RESPONSE. 11 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.