The Screw,machine, cataloged under National Stock Number 5305-01-064-8779, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-064-8779 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.139 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN |
| Screw Surface Treatment | ZINC AND CHROMATE OR CADMIUM AND CHROMATE |
| Fastener Length | 0.750 INCHES NOMINAL IN |
| Thread Length | 0.667 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Hardness Rating | 25.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM |
| Nominal Thread Diameter | 0.216 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL COMP 1022 |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 24 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.407 INCHES MINIMUM AND 0.425 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 |
|---|---|
| H-81-12 | 3/2 Design control — primary reference U.S. Government activity |
| H-07-6 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-064-8779 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-064-8779: Head Height: 0.139 INCHES MINIMUM AND 0.151 INCHES MAXIMUM IN; Screw Surface Treatment: ZINC AND CHROMATE OR CADMIUM AND CHROMATE; Fastener Length: 0.750 INCHES NOMINAL IN; Thread Length: 0.667 INCHES MINIMUM AND 0.750 INCHES MAXIMUM 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.