The Ring,retaining, cataloged under National Stock Number 5325-01-489-0476, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 3 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. Current acquisition status: Active.
| Item Name | Ring,retaining |
| FSC / FSG | 5325 — Fastening Devices (FSG 53) |
| Manufacturers | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (CAGE 61208) |
| Parameter | Value |
|---|---|
| NSN | 5325-01-489-0476 |
| Primary Part Number | A2621N |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic |
| Status | ACTIVE |
| Material Diameter | 6.000 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | ROUND |
| Inside Diameter | 5.750 INCHES NOMINAL IN |
| 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 |
|---|---|
| A2621N PRIMARY | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA) |
NSN 5325-01-489-0476 is a Ring,retaining, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-489-0476 has 1 manufacturer part number on file: A2621N (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic).
Key specifications for A2621N: Material Diameter: 6.000 INCHES NOMINAL IN; Cross-Sectional Shape Style: ROUND; Inside Diameter: 5.750 INCHES NOMINAL IN. 3 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.