The Ring,retaining, cataloged under National Stock Number 5325-00-649-7029, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Smalley Steel Ring Co.. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5325-00-649-7029 |
| Primary Part Number | RS68SK |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Smalley Steel Ring Co. |
| Status | ACTIVE |
| Usage Design | EXTERNAL |
| Cross-Sectional Shape Style | DOUBLE OVAL |
| Outside Diameter | 0.749 INCHES MINIMUM AND 0.757 INCHES MAXIMUM IN |
| Major Thickness | 0.024 INCHES NOMINAL IN |
| Inside Diameter | 0.647 INCHES NOMINAL IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPIRAL |
| Surface Treatment | PASSIVATE |
| Material | STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5325-00-649-7029 is a Ring,retaining, manufactured by Smalley Steel Ring Co., classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-649-7029 has 2 manufacturer part numbers on file: 9166071 (Us Army Aviation and Missile Command), RS68SK (Smalley Steel Ring Co.).
1 possible match (shared part number, not a government interchangeability claim): 6620-01-161-3646. Verify interchangeability with system specifications before substitution.
Key specifications for RS68SK: Usage Design: EXTERNAL; Cross-Sectional Shape Style: DOUBLE OVAL; Outside Diameter: 0.749 INCHES MINIMUM AND 0.757 INCHES MAXIMUM IN; Major Thickness: 0.024 INCHES NOMINAL IN. 9 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.