The Screw,close Tolerance, cataloged under National Stock Number 5305-01-683-1914, 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13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-683-1914 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Surface Treatment Document and Classification | NAS1154 NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | NAS1154 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.2500 INCHES IN |
| Head Style | FLUSH |
| Thread Direction | RIGHT-HAND |
| Head Length | 0.449 INCHES MINIMUM IN |
| Grip Diameter | 0.6025 INCHES NOMINAL IN |
| Bottom Countersink Diameter | 0.118 INCHES MAXIMUM IN |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | TITANIUM OVERALL |
| 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 |
|---|---|
| NAS1154V8A | 3/2 Design control — primary reference U.S. Government activity |
| NAS1154 | 5/1 Secondary reference U.S. Government activity |
NSN 5305-01-683-1914 is a Screw,close Tolerance, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-683-1914: Surface Treatment Document and Classification: NAS1154 NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL; Material Document and Classification: NAS1154 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL; 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.