The Screw,machine, cataloged under National Stock Number 5305-01-263-8890, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-263-8890 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.160 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN |
| Fastener Length | 2.500 INCHES NOMINAL IN |
| Screw Material Document and Classification | QQ-P-330 FED SPEC ALL MATERIAL RESPONSES |
| Thread Length | 1.500 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | ROUND |
| Thread Direction | RIGHT-HAND |
| Screw Material | COPPER ALLOY 510 OR COPPER ALLOY 524 |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.443 INCHES MINIMUM AND 0.472 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 |
| Reference | Meaning |
|---|---|
| 810-1385791-16 | 3/2 Design control — primary reference U.S. Government activity |
| 810-1385791PC16 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5305-01-263-8890 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-263-8890: Head Height: 0.160 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN; Fastener Length: 2.500 INCHES NOMINAL IN; Screw Material Document and Classification: QQ-P-330 FED SPEC ALL MATERIAL RESPONSES; Thread Length: 1.500 INCHES MINIMUM IN. 13 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.