The Screw,machine, cataloged under National Stock Number 5305-01-481-5355, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-481-5355 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Fastener Length | 0.375 INCHES NOMINAL IN |
| Screw Material Document and Classification | QQ-B-637, COMP 4 FED SPEC 1ST MATERIAL RESPONSE AND QQ-B-637, COMP 1 FED SPEC 2ND MATERIAL RESPONSE |
| Thread Length | 0.375 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | COPPER ALLOY 462 AND COPPER ALLOY 464 |
| Minimum Tensile Strength | 60000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Countersink Angle | 82.0 DEGREES NOMINAL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.720 INCHES MINIMUM AND 0.781 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 |
|---|---|
| 122-2422417 PIECE 261 | 5/2 Secondary reference U.S. Government activity |
| 122-2422386 PIECE 261 | 3/2 Design control — primary reference U.S. Government activity |
| 122-2422417 | D/9 Drawing number reference only U.S. Government activity |
NSN 5305-01-481-5355 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-481-5355: Fastener Length: 0.375 INCHES NOMINAL IN; Screw Material Document and Classification: QQ-B-637, COMP 4 FED SPEC 1ST MATERIAL RESPONSE AND QQ-B-637, COMP 1 FED SPEC 2ND MATERIAL RESPONSE; Thread Length: 0.375 INCHES NOMINAL IN; Nominal Thread Diameter: 0.250 INCHES IN. 14 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.