The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-182-6137, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-182-6137 |
| Primary Part Number | H52156-7LH |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Washer Outside Diameter | 0.645 INCHES NOMINAL IN |
| Width Across Flats | 0.494 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Washer Thickness | 0.025 INCHES NOMINAL IN |
| Material Document and Classification | AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | LEFT-HAND |
| Nominal Thread Size | 0.4375 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 0.4375 |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| 9530M65P11 | Bristol Industries, Llc (USA) |
| H52156-7LH PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 9530M65P11 | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| VN1318DA070 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-182-6137 is a Nut,self-Locking,extended Washer, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-182-6137 has 3 manufacturer part numbers on file: 9530M65P11 (Bristol Industries, Llc), H52156-7LH (Howmet Global Fastening Systems Inc), 9530M65P11 (General Electric Company).
Key specifications for H52156-7LH: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.203 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN; Washer Outside Diameter: 0.645 INCHES NOMINAL IN; Width Across Flats: 0.494 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN. 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.