The Ring,retaining, cataloged under National Stock Number 5325-01-477-2953, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-477-2953 |
| Primary Part Number | 845-7285244 ITEM 53 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Naval Sea Systems Command |
| 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 |
|---|---|
| 845-7285244 ITEM 53 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 2643-405-01 ITEM 53 | 5/2 Secondary reference U.S. Government activity |
NSN 5325-01-477-2953 is a Ring,retaining, manufactured by Naval Sea Systems Command, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-477-2953 has 1 manufacturer part number on file: 845-7285244 ITEM 53 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-505-0518. Verify interchangeability with system specifications before substitution.
Key specifications for 845-7285244 ITEM 53: Part Name Assigned by Controlling Agency: INAVY: RING, SEAT; DRAWING NAME: VALVE ASSEMBLY - BALL AIR BLEED TYPE .25-2.50 INCH 0-4500 PSI IN; End Item Identification: VALVE B BLD 0.50IPS 4500PSI SWLDG CRES; VALVE, BALL AIR-BLEED. 0 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.