The Ring,retaining, cataloged under National Stock Number 5325-01-256-5394, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Stein Seal Company. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-256-5394 |
| Primary Part Number | SSCY6390-3 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Stein Seal Company |
| Status | ACTIVE |
| Usage Design | INTERNAL |
| End Style | VERTEX BELOW CENTER |
| Material Document and Classification | ALLOY A286 ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 2.929 INCHES MINIMUM AND 2.954 INCHES MAXIMUM IN |
| Major Thickness | 0.023 INCHES MINIMUM AND 0.026 INCHES MAXIMUM IN |
| Inside Diameter | 2.623 INCHES MINIMUM AND 2.632 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | INTERNAL |
| Material | IRON ALLOY 660 |
| 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 |
|---|---|
| SSCY6390-3 PRIMARY | Stein Seal Company (USA) |
NSN 5325-01-256-5394 is a Ring,retaining, manufactured by Stein Seal Company, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-256-5394 has 1 manufacturer part number on file: SSCY6390-3 (Stein Seal Company).
Key specifications for SSCY6390-3: Usage Design: INTERNAL; End Style: VERTEX BELOW CENTER; Material Document and Classification: ALLOY A286 ASSN STD SINGLE MATERIAL RESPONSE; Cross-Sectional Shape Style: RECTANGULAR. 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.