The Ring,retaining, cataloged under National Stock Number 5325-01-478-4698, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5325-01-478-4698 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Status | ACTIVE |
| Usage Design | EXTERNAL |
| Cross-Sectional Shape Style | ROUNDED CORNERS |
| Outside Diameter | 2.078 INCHES MINIMUM AND 2.082 INCHES MAXIMUM IN |
| Major Thickness | 0.300 INCHES NOMINAL IN |
| Inside Diameter | 1.750 INCHES MINIMUM AND 1.752 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPECIAL FLAT |
| 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 |
|---|---|
| 845-7108936 ITEM 9 | 5/2 Secondary reference U.S. Government activity |
| 2643-405-01 ITEM 54 | 5/2 Secondary reference U.S. Government activity |
| 845-7285244 ITEM 54 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 2640-809-40 ITEM 9 | 5/2 Secondary reference U.S. Government activity |
| 2641-809-40 ITEM 9 | 3/2 Design control — primary reference U.S. Government activity |
| G547-0002-264382003-032 | 5/2 Secondary reference U.S. Government activity |
| 7550478-264382003-032 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 264382003-032 | 5/2 Secondary reference U.S. Government activity |
NSN 5325-01-478-4698 is a Ring,retaining, classified under FSC 5325, Fastening Devices. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5325-01-633-9186. Verify interchangeability with system specifications before substitution.
Key specifications for 5325-01-478-4698: Usage Design: EXTERNAL; Cross-Sectional Shape Style: ROUNDED CORNERS; Outside Diameter: 2.078 INCHES MINIMUM AND 2.082 INCHES MAXIMUM IN; Major Thickness: 0.300 INCHES NOMINAL IN. 8 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.