The Washer,key, cataloged under National Stock Number 5310-00-159-3590, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-159-3590 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| External Straight Key Length | 0.437 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-417,TYPE 1,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE AND QQ-Z-325,TYPE 2,CLASS 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| Overall Distance Including Keys | 1.344 INCHES NOMINAL IN |
| Heat Treatment | AS FABRICATED |
| Style Designator | KEY |
| Material Document and Classification | MIL-S-11415,CLASS E-CANCELLED MIL STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.3438 INCHES NOMINAL IN |
| Peening Key Length | 0.478 INCHES NOMINAL IN |
| Material Thickness | 0.030 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN |
| External Straight Key Width | 0.359 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| External Key Quantity | 4 |
| Surface Treatment | CADMIUM AND ZINC OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 0.391 INCHES MINIMUM AND 0.422 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 |
|---|---|
| 1287783 | 3/2 Design control — primary reference U.S. Government activity |
| 10399436 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5310-00-159-3590 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-159-3590: External Straight Key Length: 0.437 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-417,TYPE 1,CLASS 3 FED SPEC 1ST TREATMENT RESPONSE AND QQ-Z-325,TYPE 2,CLASS 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL; Overall Distance Including Keys: 1.344 INCHES NOMINAL IN; Heat Treatment: AS FABRICATED. 14 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.