The Screw,machine, cataloged under National Stock Number 5305-01-126-5251, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Contraves 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. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-126-5251 |
| Primary Part Number | 23444 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Contraves Inc |
| Status | ACTIVE |
| Head Height | 0.074 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN |
| Screw Surface Treatment | PASSIVATE |
| Fastener Length | 0.355 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Thread Length | 0.293 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | BUTTON |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL CORROSION RESISTING |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.303 INCHES MINIMUM AND 0.321 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 |
|---|---|
| 23444 PRIMARY | Contraves Inc (USA) |
NSN 5305-01-126-5251 is a Screw,machine, manufactured by Contraves Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-126-5251 has 1 manufacturer part number on file: 23444 (Contraves Inc).
4 possible matches (shared part number, not a government interchangeability claim): 5950-01-135-3607, 3130-01-186-7099, 5950-01-202-0194. Verify interchangeability with system specifications before substitution.
Key specifications for 23444: Head Height: 0.074 INCHES MINIMUM AND 0.086 INCHES MAXIMUM IN; Screw Surface Treatment: PASSIVATE; Fastener Length: 0.355 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN; Thread Length: 0.293 INCHES MINIMUM AND 0.375 INCHES MAXIMUM 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.