The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-165-3346, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-165-3346 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Washer Outside Diameter | 0.715 INCHES MINIMUM AND 0.740 INCHES MAXIMUM IN |
| Width Across Flats | 0.5510 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | GM 4342-M,FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Washer Thickness | 0.060 INCHES MINIMUM AND 0.083 INCHES MAXIMUM IN |
| Material Document and Classification | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Nut Counterbore Depth | 0.105 INCHES MINIMUM AND 0.125 INCHES MAXIMUM WASHER IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Counterbore Diameter | 0.385 INCHES MINIMUM AND 0.400 INCHES MAXIMUM WASHER IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | ZINC OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 1110 OR STEEL COMP 1010 OR STEEL COMP 1020 OVERALL |
| 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 |
|---|---|
| 6556923 | 5/9 Secondary reference General Motors Llc Dba General Motors Llc |
| 6556923 | 3/9 Design control — primary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
NSN 5310-01-165-3346 is a Nut,self-Locking,extended Washer, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-165-3346: Overall Height: 0.335 INCHES MINIMUM AND 0.355 INCHES MAXIMUM IN; Washer Outside Diameter: 0.715 INCHES MINIMUM AND 0.740 INCHES MAXIMUM IN; Width Across Flats: 0.5510 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN; Surface Treatment Document and Classification: GM 4342-M,FSCM 11862 MFR REF SINGLE TREATMENT RESPONSE OVERALL. 16 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.