The Ring,retaining, cataloged under National Stock Number 5325-01-276-8734, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-276-8734 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Status | ACTIVE |
| Material Hardness Rating | 41.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM |
| Usage Design | INTERNAL |
| Strength Rating | ERR-060 |
| Material Document and Classification | AMS 5525 ALLOY 660 A286 ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 1.523 INCHES NOMINAL IN |
| Major Thickness | 0.043 INCHES NOMINAL IN |
| Inside Diameter | 1.333 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPECIAL FLAT |
| Material | IRON ALLOY 660 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| RD15951-145-SN | 7/2 Vendor item drawing reference Hydro-Aire Aerospace Corp. Dba Lear Romec Div Lear Romec |
| 626-529-9037 | 5/2 Secondary reference U.S. Government activity |
| RR-145-SN | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-01-276-8734 is a Ring,retaining, classified under FSC 5325, Fastening Devices. Status: active.
Key specifications for 5325-01-276-8734: Material Hardness Rating: 41.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM; Usage Design: INTERNAL; Strength Rating: ERR-060; Material Document and Classification: AMS 5525 ALLOY 660 A286 ASSN STD 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.