The Washer,key, cataloged under National Stock Number 5310-01-447-0731, 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 8 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-447-0731 |
| Primary Part Number | 518-5794762 ITEM 53 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Overall Distance Including Keys | 3.250 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | QQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 2.500 INCHES NOMINAL IN |
| Material Thickness | 0.062 INCHES NOMINAL IN |
| External Straight Key Width | 0.312 INCHES NOMINAL IN |
| Material | NICKEL ALLOY 400 OVERALL |
| Hole Diameter | 1.812 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 |
|---|---|
| 518-5794762 ITEM 53 PRIMARY | Naval Sea Systems Command (USA) |
| 518-5794762 ITEM 53 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
NSN 5310-01-447-0731 is a Washer,key, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-447-0731 has 2 manufacturer part numbers on file: 518-5794762 ITEM 53 (Naval Sea Systems Command), 518-5794762 ITEM 53 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 518-5794762 ITEM 53: Overall Distance Including Keys: 3.250 INCHES NOMINAL IN; Style Designator: KEY; Material Document and Classification: QQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 2.500 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.