The Ring,retaining, cataloged under National Stock Number 5325-01-042-9839, is classified within Federal Supply Class 5325 (Fastening Devices) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Corporation. Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5325-01-042-9839 |
| Primary Part Number | 6726656-96 |
| Item Name | Ring,retaining |
| FSC / FSG | 5325 / 53 — Fastening Devices |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Usage Design | INTERNAL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 1.025 INCHES MINIMUM AND 1.038 INCHES MAXIMUM IN |
| Major Thickness | 0.035 INCHES MINIMUM AND 0.039 INCHES MAXIMUM IN |
| Inside Diameter | 0.875 INCHES MINIMUM AND 0.888 INCHES MAXIMUM IN |
| Casehardening Indicator | NOT CASEHARDENED |
| Ring Style | SPECIAL FLAT |
| Material | STEEL |
| 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 |
|---|---|
| 6726656-96 | Rolls-Royce Corporation (USA) |
| Reference | Meaning |
|---|---|
| RR-96 | 3/2 Design control — primary reference U.S. Government activity |
| 6726656-96 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 5325-01-042-9839 is a Ring,retaining, manufactured by Rolls-Royce Corporation, classified under FSC 5325, Fastening Devices. Status: active.
NSN 5325-01-042-9839 has 1 manufacturer part number on file: 6726656-96 (Rolls-Royce Corporation).
Key specifications for 6726656-96: Usage Design: INTERNAL; Cross-Sectional Shape Style: RECTANGULAR; Outside Diameter: 1.025 INCHES MINIMUM AND 1.038 INCHES MAXIMUM IN; Major Thickness: 0.035 INCHES MINIMUM AND 0.039 INCHES MAXIMUM IN. 8 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.