The Washer,key, cataloged under National Stock Number 5310-01-111-2790, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-111-2790 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Internal Straight Key Width | 0.052 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.317 INCHES MINIMUM AND 0.352 INCHES MAXIMUM IN |
| Distance From Centerline to Inside of Prebent Key | 0.263 INCHES NOMINAL IN |
| External Prebent Key Length | 0.056 INCHES NOMINAL IN |
| Overall Distance Including Keys | 0.605 INCHES NOMINAL IN |
| Style Designator | KEY |
| Outside Diameter | 0.525 INCHES NOMINAL IN |
| Material Thickness | 0.035 INCHES NOMINAL IN |
| External Prebent Key Width | 0.107 INCHES MINIMUM AND 0.117 INCHES MAXIMUM IN |
| Material | STEEL COMP 303 OVERALL |
| Hole Diameter | 0.337 INCHES MINIMUM AND 0.377 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 |
| Reference | Meaning |
|---|---|
| 017-10036 | 3/9 Design control — primary reference Eaton Corp Heinemann Products Commercial Controls Div |
| 5265909-001 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-01-111-2790 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-111-2790: Internal Straight Key Width: 0.052 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.317 INCHES MINIMUM AND 0.352 INCHES MAXIMUM IN; Distance From Centerline to Inside of Prebent Key: 0.263 INCHES NOMINAL IN; External Prebent Key Length: 0.056 INCHES NOMINAL IN. 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.