The Thumbscrew, cataloged under National Stock Number 5305-01-129-4358, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Promptus Electonic Hardware Inc. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-129-4358 |
| Primary Part Number | 297-04SS-6-32E |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Promptus Electonic Hardware Inc |
| Status | ACTIVE |
| Head Height | 0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN |
| Fastener Length | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Thread Length | 0.303 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.375 INCHES MINIMUM AND 0.395 INCHES MAXIMUM 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 |
|---|---|
| 297-04SS-6-32E PRIMARY | Promptus Electonic Hardware Inc (USA) |
| 297-04SS6-32 PRIMARY | Promptus Electonic Hardware Inc (USA) |
| Reference | Meaning |
|---|---|
| 1935AS421-1 | 7/2 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 5305-01-129-4358 is a Thumbscrew, manufactured by Promptus Electonic Hardware Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-129-4358 has 2 manufacturer part numbers on file: 297-04SS-6-32E (Promptus Electonic Hardware Inc), 297-04SS6-32 (Promptus Electonic Hardware Inc).
Key specifications for 297-04SS-6-32E: Head Height: 0.298 INCHES MINIMUM AND 0.328 INCHES MAXIMUM IN; Fastener Length: 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM IN; Thread Length: 0.303 INCHES MINIMUM AND 0.385 INCHES MAXIMUM 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.