The Screw,close Tolerance, cataloged under National Stock Number 5305-01-043-5748, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Hi-Shear Corporation. Government technical data includes 21 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through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-043-5748 |
| Primary Part Number | HT193LB3D11 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES GRIP |
| Surface Finish | 63.0 MICROINCHES BEARING SURFACE OF HEAD |
| Head Height | 0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN |
| Fastener Length | 1.011 INCHES MINIMUM AND 1.058 INCHES MAXIMUM IN |
| Thread Length | 0.323 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN |
| Hole Configuration Style | ROUND LONGITUDINAL HOLE |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Specification/standard Data | 26512-GB511J PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Grip Length | 0.688 INCHES NOMINAL IN |
| Grip Diameter | 0.1885 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM IN |
| Internal Drive Style | HIGH-TORQUE |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | TITANIUM ALLOY UNS R54520 OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hole Type | DRILLED |
| Hole Diameter | 0.037 INCHES NOMINAL IN |
| Head Diameter | 0.357 INCHES MINIMUM AND 0.373 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 |
|---|---|
| HT193LB3D11 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT193LB3D11 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| 67077D3-11 | 3/2 Design control — primary reference U.S. Government activity |
| 67077D3-11 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| T151-3H11 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| HT8099-3D11 | 3/2 Design control — primary reference U.S. Government activity |
| BM21009-3H11 | 5/9 Secondary reference U.S. Government activity |
| GB511J3D11 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
| T151-3H11 | 5/9 Secondary reference U.S. Government activity |
| BM21009-3H11 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
NSN 5305-01-043-5748 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-043-5748 has 2 manufacturer part numbers on file: HT193LB3D11 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT193LB3D11 (Hi-Shear Corporation).
Key specifications for HT193LB3D11: Surface Finish: 63.0 MICROINCHES GRIP; Surface Finish: 63.0 MICROINCHES BEARING SURFACE OF HEAD; Head Height: 0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM IN; Fastener Length: 1.011 INCHES MINIMUM AND 1.058 INCHES MAXIMUM IN. 21 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.