The Ring,retaining, cataloged under National Stock Number 5325-00-664-1663, 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10 specifications, cited from the U.S. Government catalog. 9 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-664-1663 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Status | ACTIVE |
| Material Hardness Rating | 63.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 69.5 ROCKWELL SUPERFICIAL 30-N MAXIMUM |
| Usage Design | INTERNAL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 0.548 INCHES NOMINAL IN |
| End Play Takeup | 0.020 INCHES MAXIMUM IN |
| Major Thickness | 0.035 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | INTERNAL BOWED |
| Surface Treatment | PASSIVATE |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 499-020-031 | 5/1 Secondary reference L3harris Interstate Electronics Corporation |
| N50001-50-H | 5/9 Secondary reference Truarc Company Llc Dba Waldes Truarc |
| T9160491-103 | 5/9 Secondary reference General Electric Company |
| MS16629-4050 | 2/2 Government specification standardization U.S. Government activity |
| 5325PL1656919 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 3001-X50-SS2 | 5/9 Secondary reference U.S. Government activity |
| N5001-50H | 5/9 Secondary reference Truarc Company Llc Dba Waldes Truarc |
| 12Z5012-80 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| B14826-4 | 5/9 Secondary reference U.S. Government activity |
NSN 5325-00-664-1663 is a Ring,retaining, classified under FSC 5325, Fastening Devices. Status: active.
Key specifications for 5325-00-664-1663: Material Hardness Rating: 63.0 ROCKWELL SUPERFICIAL 30-N MINIMUM AND 69.5 ROCKWELL SUPERFICIAL 30-N MAXIMUM; Usage Design: INTERNAL; Cross-Sectional Shape Style: RECTANGULAR; Outside Diameter: 0.548 INCHES NOMINAL IN. 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.