The Washer,key, cataloged under National Stock Number 5310-00-656-3087, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-656-3087 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| External Prebent Key Length | 0.055 INCHES NOMINAL IN |
| Overall Distance Including Keys | 0.828 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-5059 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.465 INCHES NOMINAL IN |
| Material Thickness | 0.031 INCHES NOMINAL IN |
| External Key Quantity | 3 |
| Surface Treatment | PASSIVATE OVERALL |
| External Prebent Key Width | 0.188 INCHES NOMINAL IN |
| Material | STEEL COMP 302 OVERALL |
| Hole Diameter | 0.266 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 |
| Reference | Meaning |
|---|---|
| 87549 | 5/2 Secondary reference U.S. Government activity |
| 87549 | 3/9 Design control — primary reference Hamilton Sundstrand Corp |
NSN 5310-00-656-3087 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-656-3087: External Prebent Key Length: 0.055 INCHES NOMINAL IN; Overall Distance Including Keys: 0.828 INCHES NOMINAL IN; Material Document and Classification: MIL-S-5059 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.465 INCHES NOMINAL IN. 10 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.