The Thumbscrew, cataloged under National Stock Number 5305-01-005-8647, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-005-8647 |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.750 INCHES NOMINAL IN |
| Fastener Length | 1.187 INCHES NOMINAL IN |
| Shoulder Length | 0.073 INCHES NOMINAL FIRST SHOULDER IN |
| Surface Treatment Document and Classification | MIL-A-8625 TY 2 CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.318 INCHES MINIMUM AND 0.320 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 1.052 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | QQ-A-225/6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | KNURLED NO. 1 |
| Thread Direction | RIGHT-HAND |
| Point Style | POINTLESS |
| Surface Treatment | ANODIZE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 28 |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 1.250 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 |
|---|---|
| 7329147-01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-005-8647 is a Thumbscrew, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-005-8647: Head Height: 0.750 INCHES NOMINAL IN; Fastener Length: 1.187 INCHES NOMINAL IN; Shoulder Length: 0.073 INCHES NOMINAL FIRST SHOULDER IN; Surface Treatment Document and Classification: MIL-A-8625 TY 2 CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 18 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.