The Ring,retaining, cataloged under National Stock Number 5325-01-147-9591, 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. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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.
| Item Name | Ring,retaining |
| FSC / FSG | 5325 — Fastening Devices (FSG 53) |
| Manufacturers | Caterpillar Inc Div Caterpillar Defense (CAGE 11083); Kovatch Corp. (CAGE 59556) |
| Parameter | Value |
|---|---|
| NSN | 5325-01-147-9591 |
| Primary Part Number | 4N6404 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| 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 |
|---|---|
| 4N6404 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| K-500-EN-0471 PRIMARY | Kovatch Corp. (USA) |
| Reference | Meaning |
|---|---|
| 5101-35-ZD | C/1 Advisory reference — outside the item-of-supply concept Rotor Clip Company, Inc. |
| 5101-35-ZD | 5/9 Secondary reference Truarc Company Llc Dba Waldes Truarc |
NSN 5325-01-147-9591 is a Ring,retaining, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-147-9591 has 2 manufacturer part numbers on file: 4N6404 (Caterpillar Inc Div Caterpillar Defense), K-500-EN-0471 (Kovatch Corp.).
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.