The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-596-8375, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-596-8375 |
| Primary Part Number | 2443731 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Washer Outside Diameter | 1.500 INCHES NOMINAL IN |
| Width Across Flats | 1.125 INCHES NOMINAL IN |
| Thread Series | UNF |
| Washer Thickness | 0.094 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.875 INCHES IN |
| Locking Feature | FREE-RUNNING ALL METAL DESIGN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 14 |
| Material | STEEL COMP 4130 OVERALL |
| 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 |
|---|---|
| 2443731 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 2443731 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-00-596-8375 is a Nut,self-Locking,extended Washer, manufactured by The Boeing Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-596-8375 has 1 manufacturer part number on file: 2443731 (The Boeing Company).
Key specifications for 2443731: Overall Height: 0.812 INCHES NOMINAL IN; Washer Outside Diameter: 1.500 INCHES NOMINAL IN; Width Across Flats: 1.125 INCHES NOMINAL IN; Thread Series: UNF. 13 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.