The Ring,retaining, cataloged under National Stock Number 5325-01-143-6424, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is William Powell Company, the Dba Powell Valve Div the Starflo Corporation. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-143-6424 |
| Primary Part Number | 40299 SHEET F |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | William Powell Company, the Dba Powell Valve Div the Starflo Corporation |
| Status | ACTIVE |
| Usage Design | EXTERNAL |
| End Style | D SHAPE ABOVE INSIDE PERIPHERY |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 0.586 INCHES MINIMUM AND 0.594 INCHES MAXIMUM IN |
| Major Thickness | 0.062 INCHES NOMINAL IN |
| Inside Diameter | 0.343 INCHES MINIMUM AND 0.347 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | STRAIGHT GAP |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 40299 SHEET F PRIMARY | William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA) |
| Reference | Meaning |
|---|---|
| F-42099 | 5/9 Secondary reference William Powell Company, the Dba Powell Valve Div the Starflo Corporation |
NSN 5325-01-143-6424 is a Ring,retaining, manufactured by William Powell Company, the Dba Powell Valve Div the Starflo Corporation, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-143-6424 has 1 manufacturer part number on file: 40299 SHEET F (William Powell Company, the Dba Powell Valve Div the Starflo Corporation).
Key specifications for 40299 SHEET F: Usage Design: EXTERNAL; End Style: D SHAPE ABOVE INSIDE PERIPHERY; Cross-Sectional Shape Style: RECTANGULAR; Outside Diameter: 0.586 INCHES MINIMUM AND 0.594 INCHES MAXIMUM IN. 9 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.