The Screw,close Tolerance, cataloged under National Stock Number 5305-01-526-4037, 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 17 specifications, cited from the U.S. Government catalog. The record lists 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-526-4037 |
| Primary Part Number | TX1026V6-16A |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Hi-Shear Corporation |
| Status | ACTIVE |
| Point Diameter | 0.578 INCHES NOMINAL IN |
| Fastener Length | 1.563 INCHES MINIMUM AND 1.593 INCHES MAXIMUM IN |
| Thread Length | 0.573 INCHES MINIMUM AND 0.583 INCHES MAXIMUM IN |
| Spline Major Diameter | 0.154 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Grip Length | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN |
| Grip Diameter | 0.374 INCHES NOMINAL IN |
| Internal Drive Style | TORX |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | TITANIUM OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.749 INCHES MINIMUM AND 0.760 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 |
|---|---|
| TX1026V6-16A | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| TX1026V6-16A PRIMARY | Hi-Shear Corporation (USA) |
| TX1026V6-16A | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| TX1026V6-16A PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| TX1026V6-16A PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| TX1026V6-16A PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| TX1026V6-16A PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 3M1169V6-16A PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| TX1026V6-16A | 5/9 Secondary reference Sps Technologies Inc |
| TX1026V6-16A | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-526-4037 is a Screw,close Tolerance, manufactured by Hi-Shear Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-526-4037 has 8 manufacturer part numbers on file: TX1026V6-16A (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), TX1026V6-16A (Hi-Shear Corporation), TX1026V6-16A (Fairchild Fasteners Europe - Vsd Gmbh), TX1026V6-16A (Howmet Global Fastening Systems Inc), TX1026V6-16A (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 3 more.
Key specifications for TX1026V6-16A: Point Diameter: 0.578 INCHES NOMINAL IN; Fastener Length: 1.563 INCHES MINIMUM AND 1.593 INCHES MAXIMUM IN; Thread Length: 0.573 INCHES MINIMUM AND 0.583 INCHES MAXIMUM IN; Spline Major Diameter: 0.154 INCHES MINIMUM AND 0.156 INCHES MAXIMUM IN. 17 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.