The Washer,keyway, cataloged under National Stock Number 5310-01-151-5601, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-151-5601 |
| Item Name | Washer,keyway |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Distance From Centerline to Bottom of Internal Keyway | 0.916 INCHES NOMINAL IN |
| Internal Keyway Width | 0.375 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 2.938 INCHES NOMINAL IN |
| Internal Keyway Quantity | 1 |
| Material Thickness | 0.770 INCHES MINIMUM AND 0.775 INCHES MAXIMUM IN |
| Material | STEEL COMP 4140 OVERALL |
| Hole Diameter | 1.5025 INCHES MINIMUM AND 1.5035 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 |
|---|---|
| 60-590 PIECE 351 | 3/9 Design control — primary reference Hardie-Tynes Co., Inc. |
| 590-351 | 5/9 Secondary reference Hardie-Tynes Co., Inc. |
NSN 5310-01-151-5601 is a Washer,keyway, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-151-5601: Distance From Centerline to Bottom of Internal Keyway: 0.916 INCHES NOMINAL IN; Internal Keyway Width: 0.375 INCHES MINIMUM AND 0.378 INCHES MAXIMUM IN; Material Document and Classification: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 2.938 INCHES NOMINAL IN. 8 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.