The Ring,retaining, cataloged under National Stock Number 5325-00-663-2375, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5325-00-663-2375 |
| Primary Part Number | 251499 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Lockheed Martin Corporation Div Rms - Mitchel Field |
| Status | ACTIVE |
| Usage Design | INTERNAL |
| Minor Thickness | 0.047 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | BEVELED ONE OUTSIDE CORNER |
| Outside Diameter | 1.786 INCHES NOMINAL IN |
| Major Thickness | 0.062 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | INTERNAL |
| Material | ALUMINUM ALLOY |
| 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 |
|---|---|
| 251499 PRIMARY | Lockheed Martin Corporation Div Rms - Mitchel Field (USA) |
| 5002-165A | Virax S a (FRA) |
| Reference | Meaning |
|---|---|
| N5002-165A | C/1 Advisory reference — outside the item-of-supply concept Rotor Clip Company, Inc. |
| N5002-165A | 5/9 Secondary reference Truarc Company Llc Dba Waldes Truarc |
NSN 5325-00-663-2375 is a Ring,retaining, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-663-2375 has 2 manufacturer part numbers on file: 251499 (Lockheed Martin Corporation Div Rms - Mitchel Field), 5002-165A (Virax S a).
Key specifications for 251499: Usage Design: INTERNAL; Minor Thickness: 0.047 INCHES NOMINAL IN; Cross-Sectional Shape Style: BEVELED ONE OUTSIDE CORNER; Outside Diameter: 1.786 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.