The Ring,retaining, cataloged under National Stock Number 5325-00-812-0645, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5325-00-812-0645 |
| Primary Part Number | 1004131PC4 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division |
| Status | ACTIVE |
| Usage Design | INTERNAL |
| Cross-Sectional Shape Style | DOUBLE OVAL |
| Outside Diameter | 9.293 INCHES NOMINAL IN |
| Major Thickness | 0.084 INCHES NOMINAL IN |
| Inside Diameter | 8.543 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPIRAL |
| Material | STEEL |
| 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 |
|---|---|
| 1004131PC4 | Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division (USA) |
| Reference | Meaning |
|---|---|
| RR900 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5325-00-812-0645 is a Ring,retaining, manufactured by Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-812-0645 has 1 manufacturer part number on file: 1004131PC4 (Emerson Power Transmission Corporation Dba Emerson Div Emerson Power Transmission Division).
1 possible match (shared part number, not a government interchangeability claim): 6510-01-606-5952. Verify interchangeability with system specifications before substitution.
Key specifications for 1004131PC4: Usage Design: INTERNAL; Cross-Sectional Shape Style: DOUBLE OVAL; Outside Diameter: 9.293 INCHES NOMINAL IN; Major Thickness: 0.084 INCHES NOMINAL IN. 8 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.