The DongCheng HD090507 T40 x 100mm Torx Screwdriver is the largest and most robust model in the torx range, engineered for extreme-torque applications across automotive suspension, commercial trucking, structural steel framing, and heavy plant equipment. Built with an extra-thick 8.0mm diameter round shank forged from industrial-grade Chrome Vanadium (CR-V) alloy steel, it delivers maximum torsional strength and eliminates flexing under massive turning force.

Its precision-machined T40 star tip seats deeply into heavy star-drive fasteners, providing maximum torque transfer without slippage or head damage. Integrated with strong magnetic retention, the tip holds large fasteners securely in place during vertical or awkward assembly tasks. The ergonomic dual-color soft-grip handle provides non-slip hand comfort and maximum turning leverage. Packaged with an individual plastic hanger for pegboards.

Key Features

• Extra-Thick 8.0mm CR-V Shank: Heavy-duty alloy steel blade provides ultimate torsional rigidity and prevents shank twisting.
• Heavy T40 Star Profile: Designed for large high-torque star fasteners used in structural machinery and heavy automotive frames.
• Strong Magnetic Tip: Powerful magnetic field prevents heavy fasteners from dropping during positioning and alignment.
• Anti-Cam-Out Geometry: 6-point star engagement distributes torque evenly, preventing fastener rounding and bit wear.
• Ergonomic High-Torque Handle: Contoured dual-material grip delivers maximum manual rotational force with reduced palm strain.
• Pegboard Plastic Hanger: Supplied with a dedicated hanging bracket for organized workshop storage.

Applications

• Commercial truck servicing, trailer repair, suspension brackets, and chassis fasteners
• Heavy automotive drivetrain maintenance, brake caliper brackets, and seat belt anchor bolts
• Industrial machinery overhauls, high-load gearboxes, and structural steel assembly
• Heavy civil construction equipment maintenance and agricultural machinery repair

Technical Specifications

Size/Model-wise Table