The Ring,retaining, cataloged under National Stock Number 5325-00-021-2762, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Ring,retaining |
| FSC / FSG | 5325 — Fastening Devices (FSG 53) |
| Manufacturers | Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots (CAGE 51729) |
| Parameter | Value |
|---|---|
| NSN | 5325-00-021-2762 |
| Primary Part Number | 810-612-044 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 810-612-044 | Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots (USA) |
| Reference | Meaning |
|---|---|
| RR-331 | 3/2 Design control — primary reference U.S. Government activity |
| 854-961-044 | D/9 Drawing number reference only Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots |
NSN 5325-00-021-2762 is a Ring,retaining, manufactured by Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-021-2762 has 1 manufacturer part number on file: 810-612-044 (Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots).
2 possible matches (shared part number, not a government interchangeability claim): 4310-01-050-3511, 4820-01-149-7906. Verify interchangeability with system specifications before substitution.
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.