The Washer,key, cataloged under National Stock Number 5310-00-019-1595, 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11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-019-1595 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Overall Distance Including Keys | 2.017 INCHES MINIMUM AND 2.047 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | MIL-S-5059 COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.625 INCHES MINIMUM AND 1.645 INCHES MAXIMUM IN |
| Material Thickness | 0.045 INCHES MINIMUM AND 0.055 INCHES MAXIMUM IN |
| Width Between Flats | 1.141 INCHES MINIMUM AND 1.144 INCHES MAXIMUM IN |
| External Straight Key Width | 0.146 INCHES MINIMUM AND 0.166 INCHES MAXIMUM IN |
| External Key Quantity | 15 |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 302 OVERALL |
| Hole Diameter | 1.270 INCHES MINIMUM AND 1.280 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 |
|---|---|
| S6110-26080 | 3/2 Design control — primary reference U.S. Government activity |
| S6110-26080 | 5/9 Secondary reference Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
NSN 5310-00-019-1595 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-019-1595: Overall Distance Including Keys: 2.017 INCHES MINIMUM AND 2.047 INCHES MAXIMUM IN; Style Designator: KEY; Material Document and Classification: MIL-S-5059 COND A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.625 INCHES MINIMUM AND 1.645 INCHES MAXIMUM 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.