The Setscrew, cataloged under National Stock Number 5305-01-042-3434, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 18 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 | 5305-01-042-3434 |
| Primary Part Number | 12252221 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Point Diameter | 0.276 INCHES NOMINAL IN |
| Width Across Flats | 0.3142 INCHES NOMINAL IN |
| Head Height | 0.3715 INCHES NOMINAL IN |
| Point Length | 0.160 INCHES NOMINAL IN |
| Fastener Length | 0.660 INCHES NOMINAL IN |
| Thread Length | 0.500 INCHES NOMINAL IN |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | ASTM A322 ASSN STD ALL MATERIAL RESPONSES OR ASTM A331 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Point Style | DOG |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 4130 OR STEEL COMP 4140 OR STEEL COMP 8630 OR STEEL COMP 8635 OR STEEL COMP 8637 OR STEEL COMP 8640 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.5563 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 |
|---|---|
| 12252221 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5305-01-042-3434 is a Setscrew, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-042-3434 has 1 manufacturer part number on file: 12252221 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12252221: Point Diameter: 0.276 INCHES NOMINAL IN; Width Across Flats: 0.3142 INCHES NOMINAL IN; Head Height: 0.3715 INCHES NOMINAL IN; Point Length: 0.160 INCHES NOMINAL IN. 18 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.