The Thumbscrew, cataloged under National Stock Number 5305-00-433-4729, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Lucent Technologies Inc Corporate Headquarters. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-433-4729 |
| Primary Part Number | 312315 |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lucent Technologies Inc Corporate Headquarters |
| Status | ACTIVE |
| Head Height | 0.219 INCHES NOMINAL IN |
| Fastener Length | 0.266 INCHES NOMINAL IN |
| Thread Length | 0.266 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | KNURLED NO. 4 |
| Thread Direction | RIGHT-HAND |
| Point Style | POINTLESS |
| Surface Treatment | OXIDE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 40 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.500 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 |
NSN 5305-00-433-4729 is a Thumbscrew, manufactured by Lucent Technologies Inc Corporate Headquarters, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-433-4729 has 2 manufacturer part numbers on file: 312315 (Telemechanics Inc), 312315 (Lucent Technologies Inc Corporate Headquarters).
1 possible match (shared part number, not a government interchangeability claim): 5342-00-997-9824. Verify interchangeability with system specifications before substitution.
Key specifications for 312315: Head Height: 0.219 INCHES NOMINAL IN; Fastener Length: 0.266 INCHES NOMINAL IN; Thread Length: 0.266 INCHES NOMINAL 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.