The Ring,retaining, cataloged under National Stock Number 5325-01-024-3727, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 10 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-024-3727 |
| Primary Part Number | 4N2953 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Usage Design | EXTERNAL |
| End Style | 90 DEGREE PARALLEL |
| Material Diameter | 0.026 INCHES NOMINAL IN |
| Material Document and Classification | IE727 FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 0.373 INCHES MINIMUM AND 0.389 INCHES MAXIMUM IN |
| Inside Diameter | 0.321 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | STRAIGHT GAP |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 4N2953 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 5325-01-024-3727 is a Ring,retaining, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-024-3727 has 1 manufacturer part number on file: 4N2953 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 4N2953: Usage Design: EXTERNAL; End Style: 90 DEGREE PARALLEL; Material Diameter: 0.026 INCHES NOMINAL IN; Material Document and Classification: IE727 FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE. 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.