The Washer,key, cataloged under National Stock Number 5310-01-463-2487, 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 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-463-2487 |
| Primary Part Number | 6393440-2 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Internal Prebent Key Width | 0.298 INCHES NOMINAL IN |
| Outside Diameter | 2.980 INCHES MINIMUM AND 3.020 INCHES MAXIMUM IN |
| Material Thickness | 0.224 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN |
| Material | STEEL COMP 316 OVERALL |
| Hole Diameter | 2.006 INCHES MINIMUM AND 2.026 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 |
| Part Number | Manufacturer |
|---|---|
| 6393440-2 PRIMARY | Naval Sea Systems Command (USA) |
| 6393440-2 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| Reference | Meaning |
|---|---|
| 6393440-2 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-01-463-2487 is a Washer,key, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-463-2487 has 2 manufacturer part numbers on file: 6393440-2 (Naval Sea Systems Command), 6393440-2 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp).
Key specifications for 6393440-2: Internal Prebent Key Width: 0.298 INCHES NOMINAL IN; Outside Diameter: 2.980 INCHES MINIMUM AND 3.020 INCHES MAXIMUM IN; Material Thickness: 0.224 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN; Material: STEEL COMP 316 OVERALL. 5 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.