Wera 05134802001 Square Recess Bit No.3 1/4 in Hex 3-1/2 in

Product Description

The WERA 05134802001 is a No. 3 square recess power screwdriver bit designed for use with power tools and impact drivers equipped with a 1/4 inch hex shank. Built for high-torque driving applications, this bit measures 3.5 inches in overall length and features a 6 mm body diameter. The square recess tip geometry provides a secure fit in Robertson-head fasteners, reducing cam-out under load. Licensed trade professionals including electricians, plumbers, and general contractors rely on this bit type for production fastening work where speed and bit retention matter.

This bit is suited for residential and light commercial applications wherever No. 3 square recess fasteners are specified. It works in wood framing, electrical panel assembly, deck construction, and other trades where Robertson-drive screws are common. The 3.5 inch overall length gives clearance in confined spaces while maintaining solid engagement with a standard 1/4 inch hex quick-change chuck. This listing includes 4 pieces.

Key Features

• No. 3 square recess tip for Robertson-head fasteners
• 1/4 inch hex drive shank - compatible with standard quick-change chuck systems
• 3.5 inch overall length for extended reach in tight installations
• 6 mm body diameter for rigidity under power-tool torque
• 4-piece count per package for job-site availability

Compatibility

Designed as a standard 1/4 inch hex shank power screwdriver bit for use with any quick-change drill driver or impact driver accepting 1/4 inch hex bits and No. 3 square recess fasteners.

Installation Notes

Insert the 1/4 inch hex shank fully into a quick-change or collet-style chuck before driving. Confirm the square recess tip seats completely in the fastener head before applying torque to reduce tip wear and fastener damage. When using with an impact driver, select a torque setting appropriate for the fastener and substrate to avoid overdriving. Inspect bit tips regularly and replace when corners show visible rounding.