Screw bit Proline T40 x 75 mm, 10 mm shank (model 5108289)

Screw bit Proline T40 x 75 mm, model 5108289, is a single Torx bit with a T40 tip and 75 mm overall length designed for use with 10 mm shank holders. Made from S2 tool alloy steel, it offers high hardness and precise fit to Torx fasteners for assembly, maintenance and repair tasks where T40 size and extended reach are required.

Advantages

The Proline bit is manufactured from high-quality S2 alloy steel with hardness HRC 56–60, ensuring wear resistance and reliable torque transmission up to the specified limits. A uniform, fine-grained material structure improves torsional strength and reduces the risk of tip cam-out, while the 10 mm shank ensures compatibility with common bit holders and impact adapters.

Suitable for

• Assembly and disassembly of Torx T40 fasteners
• Maintenance and repair tasks requiring a 75 mm bit reach
• Use with 10 mm shank bit holders, cordless drivers and manual screwdrivers

Key specifications

• Model: Proline 5108289
• Tip: Torx T40
• Length: 75 mm
• Shank diameter: 10 mm
• Material: S2 tool alloy steel
• Hardness: HRC 56–60
• EAN: 5903755108289

How to use

Insert the 10 mm shank into a compatible bit holder or driver, ensuring it seats firmly. Align the T40 tip with the Torx screw recess and apply steady axial pressure while turning the driver. For best engagement, keep the bit perpendicular to the screw head and use appropriate torque settings for the fastener and application.

Usage recommendations

Use the bit within its mechanical limits; avoid excessive torque beyond the fastener and tool specifications. Inspect the tip for wear before use and replace the bit if the profile is rounded or damaged to prevent screw head damage.