The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-143-3231, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Us Army Aviation and Missile Command. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-143-3231 |
| Primary Part Number | 12293549 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Width Across Flats | 0.251 INCHES NOMINAL IN |
| Head Height | 0.309 INCHES NOMINAL IN |
| Fastener Length | 1.150 INCHES NOMINAL IN |
| Thread Length | 0.450 INCHES NOMINAL IN |
| Material Document and Classification | FF-S-86 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | DOUBLE HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNRF |
| Head Diameter | 0.462 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 |
|---|---|
| 12293549 PRIMARY | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 12293549 | 5/9 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
| 12293549 | 5/1 Secondary reference U.S. Government activity |
NSN 5305-01-143-3231 is a Screw,cap,socket Head, manufactured by Us Army Aviation and Missile Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-143-3231 has 1 manufacturer part number on file: 12293549 (Us Army Aviation and Missile Command).
Key specifications for 12293549: Width Across Flats: 0.251 INCHES NOMINAL IN; Head Height: 0.309 INCHES NOMINAL IN; Fastener Length: 1.150 INCHES NOMINAL IN; Thread Length: 0.450 INCHES NOMINAL 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.