The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-229-2031, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 11 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-229-2031 |
| Primary Part Number | LE114-0031-0006 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Washer Outside Diameter | 0.605 INCHES MAXIMUM IN |
| Width Across Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nut Counterbore Depth | 0.117 INCHES MINIMUM AND 0.127 INCHES MAXIMUM WASHER IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Counterbore Diameter | 0.409 INCHES MINIMUM AND 0.413 INCHES MAXIMUM WASHER IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 630 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 |
|---|---|
| LE114-0031-0006 PRIMARY | Hi-Shear Corporation (USA) |
| LE114-0031-0006 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| MN40-6 | Hi-Shear Corporation (USA) |
| LE114-0031-0006 PRIMARY | Bristol Industries, Llc (USA) |
| MN40-6 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| LE114-0031-0006 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| LE114-0031-0006 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BH00300-6 | Bristol Industries, Llc (USA) |
| KFN598-6 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| KFN598-6 | Howmet Global Fastening Systems Inc (USA) |
| BH00908-6 | Bristol Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| LE114-0031-0006 | 5/9 Secondary reference U.S. Government activity |
| LE114-0031-0006 | 7/2 Vendor item drawing reference The Boeing Company Div Legacy Am&m |
| KFN517DL6 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
NSN 5310-01-229-2031 is a Nut,self-Locking,extended Washer, manufactured by Hi-Shear Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-229-2031 has 11 manufacturer part numbers on file: LE114-0031-0006 (Hi-Shear Corporation), LE114-0031-0006 (Howmet Global Fastening Systems Inc), MN40-6 (Hi-Shear Corporation), LE114-0031-0006 (Bristol Industries, Llc), MN40-6 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 6 more.
Key specifications for LE114-0031-0006: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.470 INCHES MAXIMUM IN; Washer Outside Diameter: 0.605 INCHES MAXIMUM IN; Width Across Flats: 0.430 INCHES MINIMUM AND 0.439 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.