The Washer,key, cataloged under National Stock Number 5310-00-782-4338, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Solutions America Inc. 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. 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 | 5310-00-782-4338 |
| Primary Part Number | 5192491 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rolls-Royce Solutions America Inc |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.765 INCHES NOMINAL IN |
| Internal Prebent Key Width | 0.222 INCHES NOMINAL IN |
| Style Designator | KEY |
| Outside Diameter | 2.276 INCHES NOMINAL IN |
| Material Thickness | 0.049 INCHES NOMINAL IN |
| Internal Prebent Key Length | 0.125 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 1.148 INCHES NOMINAL 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 |
|---|---|
| 5192491 PRIMARY | Rolls-Royce Solutions America Inc (USA) |
NSN 5310-00-782-4338 is a Washer,key, manufactured by Rolls-Royce Solutions America Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-782-4338 has 1 manufacturer part number on file: 5192491 (Rolls-Royce Solutions America Inc).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-082-6005. Verify interchangeability with system specifications before substitution.
Key specifications for 5192491: Distance From Centerline to Inside of Prebent Key: 0.765 INCHES NOMINAL IN; Internal Prebent Key Width: 0.222 INCHES NOMINAL IN; Style Designator: KEY; Outside Diameter: 2.276 INCHES NOMINAL 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.