The Screw,machine, cataloged under National Stock Number 5305-01-263-3470, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-263-3470 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Fastener Length | 0.813 INCHES MINIMUM AND 0.843 INCHES MAXIMUM IN |
| Screw Material Document and Classification | AMS4925 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.453 INCHES NOMINAL IN |
| Supplementary Features | 100.0 DEG FLUSH HEAD CLOSE TOL SHORT THD BOLT |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205-NAS1088 BASIC/CANCELED/ PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Screw Material | TITANIUM ALLOY UNS R56440 |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.951 INCHES MINIMUM AND 1.014 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 |
|---|---|
| NAS1088RC06 | 5/9 Secondary reference U.S. Government activity |
| NAS1088-6 | 5/9 Secondary reference U.S. Government activity |
| NAS1088RC06 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-263-3470 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-263-3470: Fastener Length: 0.813 INCHES MINIMUM AND 0.843 INCHES MAXIMUM IN; Screw Material Document and Classification: AMS4925 ASSN STD SINGLE MATERIAL RESPONSE; Thread Length: 0.453 INCHES NOMINAL IN; Supplementary Features: 100.0 DEG FLUSH HEAD CLOSE TOL SHORT THD BOLT. 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.