The Screw,close Tolerance, cataloged under National Stock Number 5305-00-034-1601, 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 5 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-034-1601 |
| Primary Part Number | HT239PB3-41D |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Grip Length | 2.552 INCHES MINIMUM AND 2.572 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 160000 POUNDS PER SQUARE INCH LBS |
| Thread Quantity Per Inch | 32 |
| 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 |
|---|---|
| HT239PB3-41D PRIMARY | Hi-Shear Corporation (USA) |
| HT8043-3-41D | Huck International, Inc (USA) |
| HT239PB3-41D | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| Reference | Meaning |
|---|---|
| 106750-3-410 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| GB510L3-41D | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
| HT8043-3-41T | 5/9 Secondary reference U.S. Government activity |
| HT8043-3-41T | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
| 106750-3-41D | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-00-034-1601 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-034-1601 has 3 manufacturer part numbers on file: HT239PB3-41D (Hi-Shear Corporation), HT8043-3-41D (Huck International, Inc), HT239PB3-41D (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc).
Key specifications for HT239PB3-41D: Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL; Nominal Thread Diameter: 0.190 INCHES IN; Grip Length: 2.552 INCHES MINIMUM AND 2.572 INCHES MAXIMUM IN; Minimum Tensile Strength: 160000 POUNDS PER SQUARE INCH LBS. 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.