The Ring,retaining, cataloged under National Stock Number 5325-00-663-2279, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-663-2279 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Status | ACTIVE |
| Material Hardness Rating | 34.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM |
| Usage Design | INTERNAL |
| Material Document and Classification | QQ-C-533,ALLOY 172 FED SPEC SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 0.615 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN |
| Major Thickness | 0.033 INCHES MINIMUM AND 0.037 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | INTERNAL |
| Material | COPPER ALLOY 172 |
| 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 |
|---|---|
| MIL-DTL-21248 | 4/1 Identification reference U.S. Government activity |
| 845-2445305ITEM | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| R271NAB0056NN64 3NNAA1 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| MS16625-5056 | 2/2 Government specification standardization U.S. Government activity |
| N5000-56C | 5/9 Secondary reference Truarc Company Llc Dba Waldes Truarc |
| N5000-56C | C/1 Advisory reference — outside the item-of-supply concept Rotor Clip Company, Inc. |
| 3000-X56-BC | 5/9 Secondary reference U.S. Government activity |
| MS16625-5056 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 845-2445305 ITEM 4-5 | 5/9 Secondary reference Naval Sea Systems Command |
| 845-2445305 ITEM 1-5 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 5325-00-663-2279 is a Ring,retaining, classified under FSC 5325, Fastening Devices. Status: active.
Key specifications for 5325-00-663-2279: Material Hardness Rating: 34.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM; Usage Design: INTERNAL; Material Document and Classification: QQ-C-533,ALLOY 172 FED SPEC SINGLE MATERIAL RESPONSE; Cross-Sectional Shape Style: RECTANGULAR. 9 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.