The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-040-4682, 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 15 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-040-4682 |
| Primary Part Number | LP57N26S5 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Long-Lok, Llc |
| Status | ACTIVE |
| Head Height | 0.053 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN |
| Fastener Length | 0.312 INCHES NOMINAL IN |
| Thread Length | 0.276 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.086 INCHES IN |
| Head Style | FILLISTER |
| Thread Direction | RIGHT-HAND |
| Locking Feature | STRIP THREADS |
| Surface Treatment | PASSIVATE FASTENER |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 56 |
| Material | PLASTIC LOCKING FEATURE |
| Material | STEEL CORROSION RESISTING FASTENER |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.124 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN |
| 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 |
|---|---|
| LP57N26S5 PRIMARY | Long-Lok, Llc (USA) |
NSN 5305-01-040-4682 is a Screw,cap,socket Head, manufactured by Long-Lok, Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-040-4682 has 1 manufacturer part number on file: LP57N26S5 (Long-Lok, Llc).
Key specifications for LP57N26S5: Head Height: 0.053 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN; Fastener Length: 0.312 INCHES NOMINAL IN; Thread Length: 0.276 INCHES NOMINAL IN; Nominal Thread Diameter: 0.086 INCHES IN. 15 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.