The Washer,keyway, cataloged under National Stock Number 5310-00-925-7083, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Corporation. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-925-7083 |
| Primary Part Number | 6820588 |
| Item Name | Washer,keyway |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| External Keyway Width | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS2485 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Heat Treatment | AS FABRICATED |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | AMS6357 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6350 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6358 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.550 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN |
| Material Thickness | 0.052 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Surface Treatment | OXIDE FILM OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 0.196 INCHES MINIMUM AND 0.216 INCHES MAXIMUM IN |
| External Keyway Length | 0.120 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 6820588 PRIMARY | Rolls-Royce Corporation (USA) |
| Reference | Meaning |
|---|---|
| 6820588 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 5310-00-925-7083 is a Washer,keyway, manufactured by Rolls-Royce Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-925-7083 has 1 manufacturer part number on file: 6820588 (Rolls-Royce Corporation).
Key specifications for 6820588: External Keyway Width: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS2485 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Heat Treatment: AS FABRICATED; Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM. 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.