The Setscrew, cataloged under National Stock Number 5305-01-288-5546, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Long-Lok Llc. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-288-5546 |
| Primary Part Number | LP57XFN040J8 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Long-Lok Llc |
| Status | ACTIVE |
| Thread Length | 0.500 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING POINT |
| Material | PLASTIC NYLON LOCKING FEATURE |
| 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 |
|---|---|
| LP57XFN040J8 PRIMARY | Long-Lok Llc (USA) |
| LP57XFN040J8 | Long-Lok, Llc (USA) |
| 6532B746-3 | Indal Technologies Inc (CAN) |
| Reference | Meaning |
|---|---|
| 6532B476-3 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 6532B746-3 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5305-01-288-5546 is a Setscrew, manufactured by Long-Lok Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-288-5546 has 3 manufacturer part numbers on file: LP57XFN040J8 (Long-Lok Llc), LP57XFN040J8 (Long-Lok, Llc), 6532B746-3 (Indal Technologies Inc).
Key specifications for LP57XFN040J8: Thread Length: 0.500 INCHES NOMINAL IN; Nominal Thread Diameter: 0.250 INCHES IN; Special Features: 1/4-20 X 1/2 SOCKET SET SCREW WITH HALF DOG POINT 300 SS PASSIVATED WITH A NYLON END PELLET; Thread Quantity Per Inch: 20. 5 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.