The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-491-2143, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is P55 Limited. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-491-2143 |
| Primary Part Number | HE1290019 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | P55 Limited |
| Status | ACTIVE |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 18 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| HE1290019 PRIMARY | P55 Limited (GBR) |
| 12469485-1 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| HE1290019 | 5/9 Secondary reference Dana Automotive Ltd |
NSN 5305-01-491-2143 is a Screw,cap,hexagon Head, manufactured by P55 Limited, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-491-2143 has 2 manufacturer part numbers on file: HE1290019 (P55 Limited), 12469485-1 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for HE1290019: Nominal Thread Diameter: 0.312 INCHES IN; Thread Direction: RIGHT-HAND; Thread Class: 2A A; End Item Identification: HMMWV MODEL M1114, NSN 2320014133739. 5 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.