The Ring,retaining, cataloged under National Stock Number 5325-00-321-1031, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Meggitt Aircraft Braking Systems Corporation. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5325-00-321-1031 |
| Primary Part Number | 9520994 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Meggitt Aircraft Braking Systems Corporation |
| Status | ACTIVE |
| Usage Design | INTERNAL |
| Material Diameter | 0.156 INCHES NOMINAL IN |
| Material Document and Classification | QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 7.250 INCHES NOMINAL IN |
| Inside Diameter | 6.938 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPECIAL |
| Surface Treatment | ZINC |
| Material | STEEL UNS K08500 |
| 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 |
|---|---|
| 9520994 PRIMARY | Meggitt Aircraft Braking Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 9520994 | 5/9 Secondary reference Goodyear Tire and Rubber Co the |
NSN 5325-00-321-1031 is a Ring,retaining, manufactured by Meggitt Aircraft Braking Systems Corporation, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-321-1031 has 1 manufacturer part number on file: 9520994 (Meggitt Aircraft Braking Systems Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5998-01-389-3395. Verify interchangeability with system specifications before substitution.
Key specifications for 9520994: Usage Design: INTERNAL; Material Diameter: 0.156 INCHES NOMINAL IN; Material Document and Classification: QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE; Cross-Sectional Shape Style: ROUND. 10 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.