Impact magnetic screwdriver bit Tvardy 7 mm x 48 mm 1/4" for screws, pack sizes 1/10/50/400

The Impact magnetic screwdriver bit Tvardy 7 mm x 48 mm 1/4" is a precision bit designed for use with impact drivers and impact screwdrivers. It features a 7 mm diameter working end, a 48 mm overall length, and a 1/4" hex shank for quick insertion into standard chucks and bit holders. The tip is magnetized to retain screws during fastening, reducing drop-offs and improving accuracy when driving fasteners in confined or awkward positions. Available in single and bulk pack sizes to suit occasional repairs as well as professional frequent use.

Advantages

This magnetic screwdriver bit combines impact-rated construction with a magnetic tip to provide secure screw retention and reliable torque transfer when used with impact tools. Its 1/4" hex shank ensures compatibility with common bit holders, quick-change adapters and impact drivers. The compact 48 mm length offers good balance between reach and control for both machine-driven and hand-held operations. Multiple pack size options allow selection for one-off tasks or stocking for workshop and site use.

Suitable for

• Driving screws in wood, metal and composite materials with an impact driver
• Assembly and disassembly tasks in construction, carpentry and furniture fitting
• DIY repairs at home where magnetic screw retention improves efficiency
• Professional trade work requiring bulk quantities for repeated fastening

Key specifications

• Tip diameter: 7 mm
• Overall length: 48 mm
• Shank type: 1/4" hex
• Magnetic tip for screw retention
• Suitable for use with impact drivers and impact screwdrivers
• Available pack quantities: 1, 10, 50, 400

How to use

Select the appropriate pack and insert the 1/4" hex shank into the impact driver or bit holder until it seats firmly. Position the magnetized tip on the screw head to secure it, then operate the impact driver at the recommended speed and torque for the screw type and material. Apply steady pressure and maintain alignment between bit and screw to avoid cam-out. For removal, set the driver to reverse and back the screw out while keeping the bit aligned.

Usage recommendations

Use appropriate personal protective equipment and choose a bit grade suited for the screw head profile. Inspect the bit tip regularly for wear and replace when the tip shows rounding or loss of magnetic retention to maintain safe and effective fastening. Store bits in a protective case to prevent damage and magnetic interference with other tools.