The Ring,retaining, cataloged under National Stock Number 5325-01-135-9220, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-135-9220 |
| Primary Part Number | RR-275SP |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Smalley Steel Ring Co. |
| Status | ACTIVE |
| Usage Design | INTERNAL |
| End Style | DIAGONAL PARALLEL |
| Cross-Sectional Shape Style | DOUBLE OVAL |
| Outside Diameter | 2.865 INCHES MINIMUM AND 2.890 INCHES MAXIMUM IN |
| Major Thickness | 0.046 INCHES MINIMUM AND 0.052 INCHES MAXIMUM IN |
| Inside Diameter | 2.559 INCHES MINIMUM AND 2.568 INCHES MAXIMUM IN |
| Casehardening Indicator | CASEHARDENED |
| Ring Style | SPECIAL FLAT |
| 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 |
| Part Number | Manufacturer |
|---|---|
| RR-275SP | Smalley Steel Ring Co. (USA) |
| Reference | Meaning |
|---|---|
| 10160145 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| RR-275SP | 3/2 Design control — primary reference U.S. Government activity |
| J204P0275 | 7/2 Vendor item drawing reference General Electric Company |
NSN 5325-01-135-9220 is a Ring,retaining, manufactured by Smalley Steel Ring Co., classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-135-9220 has 1 manufacturer part number on file: RR-275SP (Smalley Steel Ring Co.).
Key specifications for RR-275SP: Usage Design: INTERNAL; End Style: DIAGONAL PARALLEL; Cross-Sectional Shape Style: DOUBLE OVAL; Outside Diameter: 2.865 INCHES MINIMUM AND 2.890 INCHES MAXIMUM 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.