The Screw,self-Drilling, cataloged under National Stock Number 5305-01-559-4512, 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 15 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-559-4512 |
| Primary Part Number | 12443820-002 |
| Item Name | Screw,self-Drilling |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Head Height | 0.194 INCHES NOMINAL0.194 INCHES NOMINAL IN |
| Fastener Length | 1.000 INCHES NOMINAL1.000 INCHES NOMINAL IN |
| Extended Washer Diameter | 0.432 INCHES NOMINAL0.432 INCHES NOMINAL IN |
| Supplementary Features | FINISH-COLE POLYMER COATED 4037 STEEL |
| Hardness Rating | 28.0 ROCKWELL C NOMINAL OVERALL |
| Nominal Thread Diameter | 0.216 INCHES0.216 INCHES IN |
| Head Style | HEXAGON EXTENDED WASHERHEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Point Style | SELF-DRILLINGSELF-DRILLING |
| Width Between Flats | 0.310 INCHES NOMINAL0.310 INCHES NOMINAL IN |
| Pilot Length | 0.281 INCHES NOMINAL0.281 INCHES NOMINAL IN |
| Minimum Tensile Strength | 120 POUNDS PER SQUARE INCH120 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | W/O INTERNAL DRIVEW/O INTERNAL DRIVE |
| Thread Quantity Per Inch | 1414 |
| Material | STEEL COMP 4037 OVERALL |
| 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 |
|---|---|
| 12443820-002 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 90122A319 | Mcmaster-Carr Supply Co (USA) |
NSN 5305-01-559-4512 is a Screw,self-Drilling, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-559-4512 has 2 manufacturer part numbers on file: 12443820-002 (U S Army Tank Automotive Command Amsta-Im-Mm), 90122A319 (Mcmaster-Carr Supply Co).
Key specifications for 12443820-002: Head Height: 0.194 INCHES NOMINAL0.194 INCHES NOMINAL IN; Fastener Length: 1.000 INCHES NOMINAL1.000 INCHES NOMINAL IN; Extended Washer Diameter: 0.432 INCHES NOMINAL0.432 INCHES NOMINAL IN; Supplementary Features: FINISH-COLE POLYMER COATED 4037 STEEL. 15 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.