The Screw,machine, cataloged under National Stock Number 5305-01-481-3439, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-481-3439 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.165 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Thread Length | 0.500 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | ROUND |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL CORROSION RESISTING |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 28 |
| Thread Series Designator | UNF |
| Head Diameter | 0.492 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 8305052P1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-481-3439 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-481-3439: Head Height: 0.165 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN; Fastener Length: 0.500 INCHES NOMINAL IN; Thread Length: 0.500 INCHES NOMINAL IN; Nominal Thread Diameter: 0.250 INCHES IN. 12 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.