The Washer,key, cataloged under National Stock Number 5310-00-939-7159, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-939-7159 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Internal Prebent Key Width | 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 5.000 INCHES NOMINAL IN |
| Style Designator | KEY |
| Outside Diameter | 4.406 INCHES NOMINAL IN |
| Material Thickness | 0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN |
| External Key Quantity | 15 |
| Internal Prebent Key Length | 0.250 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Surface Treatment | PHOSPHATE OVERALL |
| External Prebent Key Width | 0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 3.988 INCHES MINIMUM AND 4.018 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 |
|---|---|
| MS172221 | 2/2 Government specification standardization U.S. Government activity |
NSN 5310-00-939-7159 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-939-7159: Internal Prebent Key Width: 0.340 INCHES MINIMUM AND 0.360 INCHES MAXIMUM IN; Overall Distance Including Keys: 5.000 INCHES NOMINAL IN; Style Designator: KEY; Outside Diameter: 4.406 INCHES NOMINAL IN. 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.