The Thumbscrew, cataloged under National Stock Number 5305-00-677-0347, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Telemechanics Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-677-0347 |
| Primary Part Number | 158206 |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Telemechanics Inc |
| Status | ACTIVE |
| Head Height | 0.344 INCHES NOMINAL IN |
| Fastener Length | 0.188 INCHES NOMINAL IN |
| Thread Length | 0.155 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | THUMB NO. 2 |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Width Between Flats | 0.562 INCHES NOMINAL IN |
| Surface Treatment | NICKEL OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 158206 PRIMARY | Telemechanics Inc (USA) |
| Reference | Meaning |
|---|---|
| 158206 | 5/9 Secondary reference At and T Corp |
NSN 5305-00-677-0347 is a Thumbscrew, manufactured by Telemechanics Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-677-0347 has 1 manufacturer part number on file: 158206 (Telemechanics Inc).
Key specifications for 158206: Head Height: 0.344 INCHES NOMINAL IN; Fastener Length: 0.188 INCHES NOMINAL IN; Thread Length: 0.155 INCHES MINIMUM IN; Nominal Thread Diameter: 0.138 INCHES IN. 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.