The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-264-1260, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Esna, Llc. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-264-1260 |
| Primary Part Number | LH12228T-242 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Washer Outside Diameter | 2.450 INCHES MAXIMUM IN |
| Width Across Flats | 1.739 INCHES MINIMUM AND 1.752 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 450.0 FAHRENHEIT MAXIMUM DEGF |
| Hardness Rating | 45.0 ROCKWELL C MAXIMUM |
| Washer Thickness | 0.290 INCHES MINIMUM IN |
| Material Document and Classification | AMS6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.500 INCHES IN |
| Counterbore Diameter | 1.535 INCHES MAXIMUM WASHER IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Style | DOUBLE HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 8740 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 |
|---|---|
| LH12228T-242 PRIMARY | Esna, Llc (USA) |
| LH12228T-242 | Fabco Generators, Inc. Dba Fabco Power (USA) |
| Reference | Meaning |
|---|---|
| LH12228T-242 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-01-264-1260 is a Nut,self-Locking,extended Washer, manufactured by Esna, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-264-1260 has 2 manufacturer part numbers on file: LH12228T-242 (Esna, Llc), LH12228T-242 (Fabco Generators, Inc. Dba Fabco Power).
Key specifications for LH12228T-242: Lubrication: DRY FILM LUBRICANT; Overall Height: 1.820 INCHES MAXIMUM IN; Washer Outside Diameter: 2.450 INCHES MAXIMUM IN; Width Across Flats: 1.739 INCHES MINIMUM AND 1.752 INCHES MAXIMUM IN. 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.