The Thumbscrew, cataloged under National Stock Number 5305-01-356-8629, 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15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-356-8629 |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Point Diameter | 0.160 INCHES MINIMUM AND 0.165 INCHES MAXIMUM IN |
| Head Height | 0.190 INCHES NOMINAL IN |
| Point Length | 0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN |
| Fastener Length | 1.500 INCHES NOMINAL IN |
| Thread Length | 0.990 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Point Chamfer Angle | 90.0 DEGREES NOMINAL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | KNURLED NO. 1 |
| Thread Direction | RIGHT-HAND |
| Point Style | CHAMFER DOG |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 1.000 INCHES NOMINAL 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 |
|---|---|
| 3661801-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-356-8629 is a Thumbscrew, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-356-8629: Point Diameter: 0.160 INCHES MINIMUM AND 0.165 INCHES MAXIMUM IN; Head Height: 0.190 INCHES NOMINAL IN; Point Length: 0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN; Fastener Length: 1.500 INCHES NOMINAL 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.