The Screw,machine, cataloged under National Stock Number 5305-00-239-0323, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Martin-Baker Aircraft Company Limited. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-239-0323 |
| Primary Part Number | DS150C1 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Martin-Baker Aircraft Company Limited |
| Status | ACTIVE |
| Head Height | 0.115 INCHES NOMINAL IN |
| Fastener Length | 0.313 INCHES NOMINAL IN |
| Screw Material Document and Classification | AISI 430 FED SPEC SINGLE MATERIAL RESPONSE |
| Thread Length | 0.313 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | ROUND |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL COMP 430 OR STEEL CORROSION RESISTING |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.322 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 |
| Part Number | Manufacturer |
|---|---|
| DS150C1 PRIMARY | Martin-Baker Aircraft Company Limited (GBR) |
NSN 5305-00-239-0323 is a Screw,machine, manufactured by Martin-Baker Aircraft Company Limited, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-239-0323 has 1 manufacturer part number on file: DS150C1 (Martin-Baker Aircraft Company Limited).
Key specifications for DS150C1: Head Height: 0.115 INCHES NOMINAL IN; Fastener Length: 0.313 INCHES NOMINAL IN; Screw Material Document and Classification: AISI 430 FED SPEC SINGLE MATERIAL RESPONSE; Thread Length: 0.313 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.