The Washer,keyway, cataloged under National Stock Number 5310-00-596-4555, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-596-4555 |
| Item Name | Washer,keyway |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| External Keyway Width | 0.156 INCHES NOMINAL IN |
| External Keyway Quantity | 1 |
| Outside Diameter | 0.500 INCHES NOMINAL IN |
| Material Thickness | 0.006 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 0.290 INCHES NOMINAL IN |
| External Keyway Length | 0.075 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 |
|---|---|
| 10-76848-4 | 5/9 Secondary reference Amphenol Corp Div Amphenol Aerospace Operations |
| 10-76848-4 | 5/9 Secondary reference Unison Industries Llc |
| 10-76848-4 | 3/9 Design control — primary reference Teledyne Industries Inc Teledyne Power Systems Div |
NSN 5310-00-596-4555 is a Washer,keyway, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-596-4555: External Keyway Width: 0.156 INCHES NOMINAL IN; External Keyway Quantity: 1; Outside Diameter: 0.500 INCHES NOMINAL IN; Material Thickness: 0.006 INCHES NOMINAL IN. 7 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.