The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-906-9515, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Mcgill Aircraft Parts, Inc.. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-906-9515 |
| Primary Part Number | LM303-135 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Mcgill Aircraft Parts, Inc. |
| Status | ACTIVE |
| Washer Outside Diameter | 0.485 INCHES NOMINAL IN |
| Width Across Flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Thread Series | UNF |
| Precious Material | SILVER |
| Washer Thickness | 0.095 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | SILVER OVERALL |
| Nut Style | DOUBLE HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| 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 |
|---|---|
| LM303-135 PRIMARY | Mcgill Aircraft Parts, Inc. (USA) |
| Reference | Meaning |
|---|---|
| LM303-135 | 7/2 Vendor item drawing reference Lord Corporation Dba Lord Corp |
NSN 5310-00-906-9515 is a Nut,self-Locking,extended Washer, manufactured by Mcgill Aircraft Parts, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-906-9515 has 1 manufacturer part number on file: LM303-135 (Mcgill Aircraft Parts, Inc.).
Key specifications for LM303-135: Overall Height: 0.331 INCHES NOMINAL IN; Washer Outside Diameter: 0.485 INCHES NOMINAL IN; Width Across Flats: 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN; Thread Series: UNF. 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.