The Washer,key, cataloged under National Stock Number 5310-00-109-8901, 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 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-109-8901 |
| Primary Part Number | 6845972-04 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rolls-Royce Corporation |
| Status | ACTIVE |
| Internal Straight Key Width | 0.115 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.195 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS 2485 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Heat Treatment | AS FABRICATED |
| Hardness Rating | 20.0 ROCKWELL C MINIMUM AND 26.0 ROCKWELL C MAXIMUM |
| Style Designator | KEY |
| Outside Diameter | 0.858 INCHES MINIMUM AND 0.873 INCHES MAXIMUM IN |
| Material Thickness | 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Surface Treatment | OXIDE FILM OVERALL |
| Material | STEEL COMP 4135 OVERALL |
| Internal Key Quantity | 2 |
| Hole Diameter | 0.503 INCHES MINIMUM AND 0.508 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 |
|---|---|
| 6845972-04 PRIMARY | Rolls-Royce Corporation (USA) |
| Reference | Meaning |
|---|---|
| 6845972-04 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
NSN 5310-00-109-8901 is a Washer,key, manufactured by Rolls-Royce Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-109-8901 has 1 manufacturer part number on file: 6845972-04 (Rolls-Royce Corporation).
Key specifications for 6845972-04: Internal Straight Key Width: 0.115 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.195 INCHES NOMINAL IN; Surface Treatment Document and Classification: AMS 2485 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Heat Treatment: AS FABRICATED. 12 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.