Screwdriver impact bit Tvardy T40 25 mm S2 (pack options 2/10/50/500)

Tvardy T40 25 mm impact screwdriver bit is a purpose-built fastening accessory made from S2 tool steel and intended for use with impact drivers and cordless drills. The 25 mm length and T40 profile match T40 fasteners commonly used in construction, woodworking, and mechanical assembly. Available in multiple pack sizes, this impact-rated bit is designed to withstand repeated shock loads and provide reliable engagement with compatible screws.

Advantages

The S2 tool steel construction offers improved hardness and toughness compared with standard bit materials, increasing resistance to wear and deformation under torque. The impact-rated design absorbs and distributes shock from impact drivers, reducing the risk of tip breakage. Precision-machined T40 profile ensures a secure fit with fasteners for consistent torque transfer and reduced cam-out during fastening.

Suitable for

• Driving T40 profile screws into wood and composite materials
• Assembly and disassembly of metal and mechanical components using T40 fasteners
• Construction and renovation tasks requiring impact driver use
• High-volume fastening in professional workshops and industrial settings

Key specifications

• Bit type: Torx T40 impact bit
• Material: S2 tool steel
• Length: 25 mm
• Drive compatibility: 1/4" hex shank for quick-change chucks and impact driver holders
• Intended use: impact driver and cordless drill applications
• Availability: multiple pack sizes to suit single, trade, or bulk use

How to use

Insert the Tvardy T40 25 mm impact bit into the quick-change chuck or bit holder of an impact driver or cordless drill until it locks. Match the T40 profile to the screw head and apply steady pressure while operating the tool at appropriate speed and torque settings for the fastener and work material. Remove the bit after use and inspect the tip for wear; replace when deformation or rounding is evident to maintain fastening quality.

Usage recommendations

For prolonged service life, use the bit with impact-rated drivers rather than manual screwdrivers, avoid excessive lateral force, and select the correct driving speed and torque for the screw and substrate. Store bits in a dry place and keep spare bits available to prevent downtime during larger projects.