The Ring,retaining, cataloged under National Stock Number 5325-01-481-5478, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is DC Fabricators Inc. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-481-5478 |
| Primary Part Number | CW-556J |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | DC Fabricators Inc |
| Status | ACTIVE |
| Material Document and Classification | MIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE |
| 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 |
|---|---|
| CW-2300DFPN23-625 | DC Fabricators Inc (USA) |
| CW-556J PRIMARY | DC Fabricators Inc (USA) |
NSN 5325-01-481-5478 is a Ring,retaining, manufactured by DC Fabricators Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-481-5478 has 2 manufacturer part numbers on file: CW-2300DFPN23-625 (DC Fabricators Inc), CW-556J (DC Fabricators Inc).
Key specifications for CW-556J: Material Document and Classification: MIL-R-8791 MIL SPEC SINGLE MATERIAL RESPONSE; Special Features: MATERIAL SPEC - POLYTETRAFLUOROETHYLENE, PTFE RESIN COMPOUND, ASTM D4894, TYPE II; Part Name Assigned by Controlling Agency: BACKING RING (SHELL AND FLANGE O-RING); Material: PLASTIC POLYTETRAFLUOROETHYLENE. 2 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.