The Screw,machine, cataloged under National Stock Number 5305-01-307-5957, 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 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-307-5957 |
| Primary Part Number | LL57N04S7 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Long-Lok, Llc |
| Status | ACTIVE |
| Head Height | 0.118 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 0.438 INCHES NOMINAL IN |
| Thread Length | 0.355 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Locking Feature Material | PLASTIC POLYCHLOROTRIFLUOROETHYLENE |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FILLISTER |
| Thread Direction | RIGHT-HAND |
| Locking Feature | STRIP |
| Screw Material | STEEL CORROSION RESISTING |
| Internal Drive Style | SLOT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.292 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE |
| 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 |
|---|---|
| LL57N04S7 PRIMARY | Long-Lok, Llc (USA) |
| Reference | Meaning |
|---|---|
| LL5N04S7 | 5/9 Secondary reference Long-Lok, Llc |
NSN 5305-01-307-5957 is a Screw,machine, manufactured by Long-Lok, Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-307-5957 has 1 manufacturer part number on file: LL57N04S7 (Long-Lok, Llc).
Key specifications for LL57N04S7: Head Height: 0.118 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN; Screw Surface Treatment: PASSIVATE; Fastener Length: 0.438 INCHES NOMINAL IN; Thread Length: 0.355 INCHES MINIMUM AND 0.438 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.