The Ring,retaining, cataloged under National Stock Number 5325-00-951-6438, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 12 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5325-00-951-6438 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Status | CANCELLED |
| Material Hardness Rating | 67.5 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 72.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM |
| Usage Design | EXTERNAL |
| Material Document and Classification | FED STD 66A STEEL NOS. 1066 THRU 1090 FED STD SINGLE MATERIAL RESPONSE A |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 0.831 INCHES NOMINAL IN |
| End Play Takeup | 0.063 INCHES MAXIMUM IN |
| Major Thickness | 0.035 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | INTERNAL BOWED |
| Material | STEEL |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 3001-X75-S7-CD | 5/9 Secondary reference U.S. Government activity |
| R273NAB0075NN05 6NNPF1 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| N5001-75MD | C/1 Advisory reference — outside the item-of-supply concept Rotor Clip Company, Inc. |
| N5001-75MF | C/1 Advisory reference — outside the item-of-supply concept Rotor Clip Company, Inc. |
| 5001-75 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| N5001-75MD | 5/9 Secondary reference Truarc Company Llc Dba Waldes Truarc |
| 3001-X75-S7-CD | C/1 Advisory reference — outside the item-of-supply concept Rotor Clip Company, Inc. |
| MS16629-1075 | 2/2 Government specification standardization U.S. Government activity |
| 5325009516438 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| N5001-75-S-MD | C/1 Advisory reference — outside the item-of-supply concept Rotor Clip Company, Inc. |
| N5001-75-S-MD | 5/9 Secondary reference Truarc Company Llc Dba Waldes Truarc |
| N5001-75MF | 5/9 Secondary reference Truarc Company Llc Dba Waldes Truarc |
NSN 5325-00-951-6438 is a Ring,retaining, classified under FSC 5325, Fastening Devices. Status: cancelled.
2 possible matches (shared part number, not a government interchangeability claim): 5325-01-398-0731, 4730-01-541-0769. Verify interchangeability with system specifications before substitution.
Key specifications for 5325-00-951-6438: Material Hardness Rating: 67.5 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 72.0 ROCKWELL SUPERFICIAL 30-N MAXIMUM; Usage Design: EXTERNAL; Material Document and Classification: FED STD 66A STEEL NOS. 1066 THRU 1090 FED STD SINGLE MATERIAL RESPONSE A; 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.
NSN 5325-00-951-6438 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.