The Ring,retaining, cataloged under National Stock Number 5325-00-488-4219, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Goodrich Aerospace Canada Ltd. Government technical data includes 11 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 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 | 5325-00-488-4219 |
| Primary Part Number | 21555-1 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Goodrich Aerospace Canada Ltd |
| Status | ACTIVE |
| Usage Design | EXTERNAL OR INTERNAL |
| End Style | 90 DEGREE PARALLEL |
| Material Diameter | 0.080 INCHES NOMINAL IN |
| Material Document and Classification | QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | ROUND |
| Outside Diameter | 1.910 INCHES NOMINAL IN |
| Inside Diameter | 1.750 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | STRAIGHT GAP |
| Surface Treatment | CADMIUM OR ZINC AND CHROMATE |
| 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 |
|---|---|
| 21555-1 PRIMARY | Goodrich Aerospace Canada Ltd (CAN) |
NSN 5325-00-488-4219 is a Ring,retaining, manufactured by Goodrich Aerospace Canada Ltd, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-488-4219 has 1 manufacturer part number on file: 21555-1 (Goodrich Aerospace Canada Ltd).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-208-7060. Verify interchangeability with system specifications before substitution.
Key specifications for 21555-1: Usage Design: EXTERNAL OR INTERNAL; End Style: 90 DEGREE PARALLEL; Material Diameter: 0.080 INCHES NOMINAL IN; Material Document and Classification: QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE. 11 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.