The Ring,retaining, cataloged under National Stock Number 5325-00-078-8450, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Westinghouse Electric Corp. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-00-078-8450 |
| Primary Part Number | 31D4131H05 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Usage Design | EXTERNAL |
| End Style | 90 DEGREE PARALLEL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 1.437 INCHES NOMINAL IN |
| Major Thickness | 0.050 INCHES NOMINAL IN |
| Inside Diameter | 1.272 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | STRAIGHT GAP |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 31D4131H05 | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 31D4131H05 | 3/9 Design control — primary reference U.S. Government activity |
| 31D4131H05 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5325-00-078-8450 is a Ring,retaining, manufactured by Westinghouse Electric Corp, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-078-8450 has 1 manufacturer part number on file: 31D4131H05 (Westinghouse Electric Corp).
Key specifications for 31D4131H05: Usage Design: EXTERNAL; End Style: 90 DEGREE PARALLEL; Cross-Sectional Shape Style: RECTANGULAR; Outside Diameter: 1.437 INCHES NOMINAL IN. 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.