The Washer,keyway, cataloged under National Stock Number 5310-01-428-7108, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-428-7108 |
| Primary Part Number | 6405751 ITEM 0019 |
| Item Name | Washer,keyway |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Distance From Centerline to Bottom of Internal Keyway | 0.930 INCHES NOMINAL IN |
| Internal Keyway Width | 0.440 INCHES NOMINAL IN |
| Surface Finish | 63.0 MICROINCHES TOP |
| Style Designator | KEY |
| Material Document and Classification | ASTM-B150 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 3.000 INCHES NOMINAL IN |
| Internal Keyway Quantity | 1 |
| Material Thickness | 1.380 INCHES NOMINAL IN |
| Material | COPPER ALLOY OVERALL |
| Hole Diameter | 1.380 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 |
| Part Number | Manufacturer |
|---|---|
| 6405751 ITEM 0019 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6111404-A18 | 5/9 Secondary reference Naval Sea Systems Command |
NSN 5310-01-428-7108 is a Washer,keyway, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-428-7108 has 1 manufacturer part number on file: 6405751 ITEM 0019 (Naval Sea Systems Command).
Key specifications for 6405751 ITEM 0019: Distance From Centerline to Bottom of Internal Keyway: 0.930 INCHES NOMINAL IN; Internal Keyway Width: 0.440 INCHES NOMINAL IN; Surface Finish: 63.0 MICROINCHES TOP; Style Designator: KEY. 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.