The Screw,machine, cataloged under National Stock Number 5305-01-548-8644, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-548-8644 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 1.546 INCHES MINIMUM AND 1.592 INCHES MAXIMUM IN |
| Screw Material Document and Classification | A286 CRES (UNS S66286) CONFORMING TO THE CHEMISTRY OF AMS5731, AMS5732, AMS5737 OR AMS5853 MFR REF SINGLE MATERIAL RESPONSE |
| Thread Length | 1.498 INCHES MINIMUM AND 1.530 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 80205 - NAS1802 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Width Between Flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Screw Material | STEEL CORROSION RESISTING |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE II |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Screw Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE |
| 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 |
|---|---|
| M87114/4-8-25 | 5/9 Secondary reference U.S. Government activity |
| MIL-B-87114 | 5/9 Secondary reference U.S. Government activity |
| NAS1802-4-25 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-548-8644 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-548-8644: Head Height: 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM IN; Screw Surface Treatment: PASSIVATE; Fastener Length: 1.546 INCHES MINIMUM AND 1.592 INCHES MAXIMUM IN; Screw Material Document and Classification: A286 CRES (UNS S66286) CONFORMING TO THE CHEMISTRY OF AMS5731, AMS5732, AMS5737 OR AMS5853 MFR REF SINGLE MATERIAL RESPONSE. 17 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.