The Screw,close Tolerance, cataloged under National Stock Number 5305-00-047-2444, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-00-047-2444 |
| Primary Part Number | HT8043-6-12 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES GRIP |
| Fastener Length | 1.125 INCHES MINIMUM AND 1.172 INCHES MAXIMUM IN |
| Thread Length | 0.365 INCHES MINIMUM AND 0.432 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 26512-GB510L MANUFACTURERS STANDARD |
| Grip Length | 1.125 INCHES MINIMUM AND 1.172 INCHES MAXIMUM IN |
| Grip Diameter | 0.3735 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.529 INCHES MINIMUM AND 0.560 INCHES MAXIMUM 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 |
|---|---|
| HT8043-6-12 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| HT239PB6-12 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| GB510L6-12 | Northrop Grumman Systems Corporation (USA) |
| HT239PB6-12 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| HT8043-6-12 | 5/9 Secondary reference U.S. Government activity |
| 106750-6-12 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-00-047-2444 is a Screw,close Tolerance, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-047-2444 has 4 manufacturer part numbers on file: HT8043-6-12 (Howmet Global Fastening Systems Inc), HT239PB6-12 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), GB510L6-12 (Northrop Grumman Systems Corporation), HT239PB6-12 (Hi-Shear Corporation).
Key specifications for HT8043-6-12: Surface Finish: 63.0 MICROINCHES GRIP; Fastener Length: 1.125 INCHES MINIMUM AND 1.172 INCHES MAXIMUM IN; Thread Length: 0.365 INCHES MINIMUM AND 0.432 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.375 INCHES IN. 16 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.