The Ring,retaining, cataloged under National Stock Number 5325-01-390-4151, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Thomas Instrument, Incorporated. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Ring,retaining |
| FSC / FSG | 5325 — Fastening Devices (FSG 53) |
| Manufacturers | Thomas Instrument, Incorporated (CAGE 50LP4); Thomas Instrument, Incorporated (CAGE 5H860) |
| Parameter | Value |
|---|---|
| NSN | 5325-01-390-4151 |
| Primary Part Number | 49439 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Thomas Instrument, Incorporated |
| 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 |
NSN 5325-01-390-4151 is a Ring,retaining, manufactured by Thomas Instrument, Incorporated, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-390-4151 has 2 manufacturer part numbers on file: 49439 (Thomas Instrument, Incorporated), 49439 (Thomas Instrument, Incorporated).
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.