The Thumbscrew, cataloged under National Stock Number 5305-00-754-3192, 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 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-00-754-3192 |
| Primary Part Number | 158649 |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Telemechanics Inc |
| Status | ACTIVE |
| Head Height | 0.525 INCHES NOMINAL IN |
| Fastener Length | 0.953 INCHES NOMINAL IN |
| Shoulder Length | 0.150 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Diameter | 0.156 INCHES NOMINAL FIRST SHOULDER IN |
| Thread Length | 0.403 INCHES MINIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Head Style | THUMB NO. 5 |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Width Between Flats | 0.406 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| 158649 PRIMARY | Telemechanics Inc (USA) |
| Reference | Meaning |
|---|---|
| 158649 | 5/9 Secondary reference At and T Corp |
| 158649 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5305-00-754-3192 is a Thumbscrew, manufactured by Telemechanics Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-754-3192 has 1 manufacturer part number on file: 158649 (Telemechanics Inc).
Key specifications for 158649: Head Height: 0.525 INCHES NOMINAL IN; Fastener Length: 0.953 INCHES NOMINAL IN; Shoulder Length: 0.150 INCHES NOMINAL FIRST SHOULDER IN; Shoulder Diameter: 0.156 INCHES NOMINAL FIRST SHOULDER 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.