The Nut,self-Locking,assembled Washe, cataloged under National Stock Number 5310-01-268-0155, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-268-0155 |
| Item Name | Nut,self-Locking,assembled Washe |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Washer Outside Diameter | 0.340 INCHES MAXIMUM IN |
| Width Across Flats | 0.213 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 450.0 FAHRENHEIT MAXIMUM DEGF |
| Material Document and Classification | AMS 5085 ASSN STD SINGLE MATERIAL RESPONSE WASHER |
| Material Document and Classification | MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE NUT |
| Nut Counterbore Depth | 0.072 INCHES MINIMUM AND 0.087 INCHES MAXIMUM NUT IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES IN |
| Specification/standard Data | 80205-NAS1726 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Counterbore Diameter | 0.185 INCHES MINIMUM AND 0.195 INCHES MAXIMUM NUT IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Nut Style | FLAT WITH TURNED UP EDGE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 36 |
| Material | STEEL COMP 1050 WASHER |
| Material | STEEL COMP 4340 NUT |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| NAS1726-05D | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-268-0155 is a Nut,self-Locking,assembled Washe, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-268-0155: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.206 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN; Washer Outside Diameter: 0.340 INCHES MAXIMUM IN; Width Across Flats: 0.213 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN. 20 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.