The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-041-5382, 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 9 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-041-5382 |
| Primary Part Number | LH11003-5K |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Washer Outside Diameter | 0.490 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Washer Thickness | 0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Style | DOUBLE HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| 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 |
|---|---|
| LH11003-5K PRIMARY | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| VN1413-W-054-5 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| LH11003-5K | 5/9 Secondary reference Harvard Industries Inc |
| 3020T62P06 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 5310-01-041-5382 is a Nut,self-Locking,extended Washer, manufactured by Esna, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-041-5382 has 1 manufacturer part number on file: LH11003-5K (Esna, Llc).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-136-7797. Verify interchangeability with system specifications before substitution.
Key specifications for LH11003-5K: Overall Height: 0.395 INCHES MINIMUM AND 0.410 INCHES MAXIMUM IN; Washer Outside Diameter: 0.490 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Washer Thickness: 0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN. 9 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.