The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-143-6534, 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 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 | 5305-01-143-6534 |
| Primary Part Number | 12255630 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Head Height | 0.593 INCHES MINIMUM AND 0.629 INCHES MAXIMUM IN |
| Fastener Length | 19.750 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-Z-325 TYPE 2 CLASS 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-416 TYPE 2 CLASS 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| Thread Length | 2.000 INCHES NOMINAL IN |
| Nominal Thread Diameter | 1.000 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 1.469 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN |
| Surface Treatment | ZINC AND CHROMATE OR CADMIUM AND CHROMATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 14 |
| Material | STEEL COMP 1025 OR STEEL COMP 1030 OR STEEL COMP 1035 OR STEEL COMP 1119 OR STEEL COMP 1132 OR STEEL COMP 12L14 OVERALL |
| Thread Series Designator | UNS |
| 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 |
|---|---|
| 12255630 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 5305-01-143-6534 is a Screw,cap,hexagon Head, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-143-6534 has 1 manufacturer part number on file: 12255630 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12255630: Head Height: 0.593 INCHES MINIMUM AND 0.629 INCHES MAXIMUM IN; Fastener Length: 19.750 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-Z-325 TYPE 2 CLASS 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-416 TYPE 2 CLASS 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL; Thread Length: 2.000 INCHES NOMINAL 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.