The Ring,retaining, cataloged under National Stock Number 5325-00-281-6658, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Solutions America Inc. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5325-00-281-6658 |
| Primary Part Number | 6750337 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Rolls-Royce Solutions America Inc |
| Status | ACTIVE |
| Material Hardness Rating | 43.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM |
| Usage Design | EXTERNAL |
| End Style | VERTEX OUTSIDE PERIPHERY |
| Material Document and Classification | ASTM A576 1060 ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 3.353 INCHES MINIMUM AND 3.391 INCHES MAXIMUM IN |
| Major Thickness | 0.123 INCHES MINIMUM AND 0.127 INCHES MAXIMUM IN |
| Inside Diameter | 2.857 INCHES MINIMUM AND 2.887 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | STRAIGHT GAP |
| Material | STEEL COMP 1060 |
| 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 |
|---|---|
| 6750337 | General Motors Corp (USA) |
| 172MDG1 | Linde Material Handling North America Corporation (USA) |
| 6750337 | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| 6750337 PRIMARY | Rolls-Royce Solutions America Inc (USA) |
| Reference | Meaning |
|---|---|
| 172MDG1 | 5/9 Secondary reference Linde Lift Truck Corp. |
| 6750337 | 5/9 Secondary reference Detroit Diesel (overseas Distribution Corp) |
| 6750337 | 5/9 Secondary reference Euclid Inc |
| 6750337 | 5/9 Secondary reference U.S. Government activity |
NSN 5325-00-281-6658 is a Ring,retaining, manufactured by Rolls-Royce Solutions America Inc, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-00-281-6658 has 4 manufacturer part numbers on file: 6750337 (General Motors Corp), 172MDG1 (Linde Material Handling North America Corporation), 6750337 (Allison Transmission Inc Dba Allison Transmission, Inc), 6750337 (Rolls-Royce Solutions America Inc).
1 possible match (shared part number, not a government interchangeability claim): 5915-00-650-7952. Verify interchangeability with system specifications before substitution.
Key specifications for 6750337: Material Hardness Rating: 43.0 ROCKWELL C MINIMUM AND 48.0 ROCKWELL C MAXIMUM; Usage Design: EXTERNAL; End Style: VERTEX OUTSIDE PERIPHERY; Material Document and Classification: ASTM A576 1060 ASSN STD SINGLE MATERIAL RESPONSE. 11 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.