The Ring,retaining, cataloged under National Stock Number 5325-01-079-2828, 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 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5325-01-079-2828 |
| Primary Part Number | 4000489 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Meggitt Aircraft Braking Systems Corporation |
| Status | ACTIVE |
| Usage Design | EXTERNAL OR INTERNAL |
| Material Diameter | 0.045 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 1.280 INCHES NOMINAL IN |
| Inside Diameter | 1.190 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| 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 |
|---|---|
| 4000489 PRIMARY | Meggitt Aircraft Braking Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 4000489 | 5/9 Secondary reference Lockheed Martin Corporation Dba Lockheed Martin Div Rotary and Mission Systems |
NSN 5325-01-079-2828 is a Ring,retaining, manufactured by Meggitt Aircraft Braking Systems Corporation, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-079-2828 has 1 manufacturer part number on file: 4000489 (Meggitt Aircraft Braking Systems Corporation).
Key specifications for 4000489: Usage Design: EXTERNAL OR INTERNAL; Material Diameter: 0.045 INCHES NOMINAL IN; Cross-Sectional Shape Style: ROUND; Outside Diameter: 1.280 INCHES NOMINAL IN. 7 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.