The Screw,machine, cataloged under National Stock Number 5305-01-683-1907, 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13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-683-1907 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Screw Surface Treatment | ALUMINUM |
| Screw Material Document and Classification | NAS1154 NATIONAL SPEC SINGLE MATERIAL RESPONSE |
| Nominal Thread Diameter | 0.2500 INCHES IN |
| Head Style | FLUSH |
| Thread Direction | RIGHT-HAND |
| Head Length | 0.449 INCHES MINIMUM IN |
| Screw Material | TITANIUM |
| Bottom Countersink Diameter | 0.118 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Shank Surface Treatment Document and Classification | NAS1154 NATIONAL SPEC SINGLE TREATMENT RESPONSE |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.449 INCHES MINIMUM 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 |
|---|---|
| NAS1154 | 5/1 Secondary reference U.S. Government activity |
| NAS1154V7A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-683-1907 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5305-01-683-1914. Verify interchangeability with system specifications before substitution.
Key specifications for 5305-01-683-1907: Screw Surface Treatment: ALUMINUM; Screw Material Document and Classification: NAS1154 NATIONAL SPEC SINGLE MATERIAL RESPONSE; Nominal Thread Diameter: 0.2500 INCHES IN; Head Style: FLUSH. 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.