The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-899-3085, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Eaton Corp Dba Eaton Aerospace Jackson. Government technical data includes 18 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-899-3085 |
| Primary Part Number | 209240 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Eaton Corp Dba Eaton Aerospace Jackson |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Washer Outside Diameter | 0.620 INCHES MAXIMUM IN |
| Width Across Flats | 0.430 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Temp Rating | 450.0 FAHRENHEIT NOMINAL DEGF |
| Hardness Rating | 49.0 ROCKWELL C MAXIMUM |
| Washer Thickness | 0.030 INCHES MINIMUM IN |
| Nut Counterbore Depth | 0.008 INCHES MINIMUM AND 0.042 INCHES MAXIMUM NUT IN |
| Thread Direction | LEFT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Counterbore Diameter | 0.375 INCHES MINIMUM AND 0.405 INCHES MAXIMUM NUT IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL 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 |
|---|---|
| 209240 PRIMARY | Eaton Corp Dba Eaton Aerospace Jackson (USA) |
NSN 5310-00-899-3085 is a Nut,self-Locking,extended Washer, manufactured by Eaton Corp Dba Eaton Aerospace Jackson, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-899-3085 has 1 manufacturer part number on file: 209240 (Eaton Corp Dba Eaton Aerospace Jackson).
Key specifications for 209240: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.267 INCHES MINIMUM AND 0.282 INCHES MAXIMUM IN; Washer Outside Diameter: 0.620 INCHES MAXIMUM IN; Width Across Flats: 0.430 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN. 18 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.