The Thumbscrew, cataloged under National Stock Number 5305-01-038-4240, 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16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-038-4240 |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.300 INCHES NOMINAL IN |
| Fastener Length | 0.390 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-STD-171 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Handle Length | 1.440 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN |
| Thread Length | 0.140 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.216 INCHES IN |
| Head Style | SLIDING HANDLE |
| Thread Direction | RIGHT-HAND |
| Color | BLACK OVERALL |
| Surface Treatment | PAINT LUSTERLESS OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNEF |
| Handle Diameter | 0.188 INCHES NOMINAL IN |
| Head Diameter | 0.620 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 |
|---|---|
| SM-C-850394-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-038-4240 is a Thumbscrew, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-038-4240: Head Height: 0.300 INCHES NOMINAL IN; Fastener Length: 0.390 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-STD-171 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Handle Length: 1.440 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN. 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.