The Thumbscrew, cataloged under National Stock Number 5305-01-276-1629, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Davco Technology, Llc. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-276-1629 |
| Primary Part Number | 191081 |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Davco Technology, Llc |
| Status | ACTIVE |
| Head Height | 0.350 INCHES NOMINAL IN |
| External Thread Tolerance Class | 6G G |
| Fastener Length | 0.550 INCHES NOMINAL IN |
| Thread Pitch in Millimeters | 1.0 |
| Thread Length | 0.470 INCHES MINIMUM IN |
| Material Document and Classification | ASTM B16 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 8.0 MILLIMETERS MM |
| Head Style | KNURLED NO. 1 |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Material | COPPER ALLOY 360 OVERALL |
| Thread Series Designator | M |
| Head Diameter | 0.550 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 |
| Part Number | Manufacturer |
|---|---|
| 191081 PRIMARY | Davco Technology, Llc (USA) |
| Reference | Meaning |
|---|---|
| 84-13320 | 7/2 Vendor item drawing reference Department of Defense Project Manager-Mobile Electric Power |
| 191081 | 5/9 Secondary reference Davco Mfg Corp |
NSN 5305-01-276-1629 is a Thumbscrew, manufactured by Davco Technology, Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-276-1629 has 1 manufacturer part number on file: 191081 (Davco Technology, Llc).
Key specifications for 191081: Head Height: 0.350 INCHES NOMINAL IN; External Thread Tolerance Class: 6G G; Fastener Length: 0.550 INCHES NOMINAL IN; Thread Pitch in Millimeters: 1.0. 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.