The Thumbscrew, cataloged under National Stock Number 5305-01-087-3102, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 25 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-087-3102 |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.880 INCHES NOMINAL IN |
| Point Length | 0.032 INCHES NOMINAL IN |
| Fastener Length | 0.750 INCHES NOMINAL IN |
| Shoulder Length | 1.000 INCHES NOMINAL OVERALL IN |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.250 INCHES NOMINAL IN |
| Shoulder Shape | SQUARE OVERALL |
| Material Document and Classification | SC-A-706376-80063 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Point Chamfer Angle | 45.0 DEGREES NOMINAL |
| First Diameter From Head | 0.208 INCHES MINIMUM AND 0.212 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Features Provided | FINISHED HEAD |
| Head Style | THUMB NO. 4 |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Width Between Flats | 1.000 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.511 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN |
| Shoulder Width Across Flats | 0.390 INCHES NOMINAL OVERALL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | ENAMEL OVERALL |
| Thread Class | 2A A |
| Test Data Document | 80063-SC-A-706141 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| Thread Quantity Per Inch | 28 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| SC-C-706141 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-087-3102 is a Thumbscrew, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-087-3102: Head Height: 0.880 INCHES NOMINAL IN; Point Length: 0.032 INCHES NOMINAL IN; Fastener Length: 0.750 INCHES NOMINAL IN; Shoulder Length: 1.000 INCHES NOMINAL OVERALL IN. 25 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.