The Ring,retaining, cataloged under National Stock Number 5325-00-321-5880, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Borg-Warner Corp. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5325-00-321-5880 |
| Primary Part Number | 4734B |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Borg-Warner Corp |
| Status | ACTIVE |
| Usage Design | EXTERNAL |
| End Style | VERTEX OUTSIDE PERIPHERY |
| Material Document and Classification | QQ-W474,COMPOSITION A OR B FED SPEC SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 1.546 INCHES NOMINAL IN |
| Major Thickness | 0.093 INCHES NOMINAL IN |
| Inside Diameter | 1.234 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | STRAIGHT GAP |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5325-00-321-5880 is a Ring,retaining, manufactured by Borg-Warner Corp, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-321-5880 has 2 manufacturer part numbers on file: 4734B (Borg-Warner Corp), 8332491 (U S Army Tank Automotive Command Amsta-Im-Mm).
1 possible match (shared part number, not a government interchangeability claim): 4420-00-679-5330. Verify interchangeability with system specifications before substitution.
Key specifications for 4734B: Usage Design: EXTERNAL; End Style: VERTEX OUTSIDE PERIPHERY; Material Document and Classification: QQ-W474,COMPOSITION A OR B FED SPEC SINGLE MATERIAL RESPONSE; Cross-Sectional Shape Style: RECTANGULAR. 10 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.