The Thumbscrew, cataloged under National Stock Number 5305-01-255-4959, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-255-4959 |
| Primary Part Number | AD34803-23 |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Head Height | 0.750 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN |
| Fastener Length | 1.838 INCHES MINIMUM AND 1.900 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 1.713 INCHES MINIMUM AND 1.900 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | WING NO. 2 |
| Thread Direction | RIGHT-HAND |
| Point Style | POINTLESS |
| Width Between Flats | 0.797 INCHES MINIMUM AND 0.827 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| 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 |
|---|---|
| AD34803-23 | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 924023-7 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-255-4959 is a Thumbscrew, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-255-4959 has 1 manufacturer part number on file: AD34803-23 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for AD34803-23: Head Height: 0.750 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN; Fastener Length: 1.838 INCHES MINIMUM AND 1.900 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416 TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 1.713 INCHES MINIMUM AND 1.900 INCHES MAXIMUM IN. 14 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.