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The APEX AM-4MM-6 is a hex drive power screwdriver bit designed for use with power screwdrivers, electric drills, and impact-rated hand tools in professional trade and industrial assembly applications. Built with a 4 mm hex drive size and an overall length of 6 inches, this bit delivers extended reach for fastening in recessed or hard-to-access locations. It ships as a single piece and is suited for electricians, HVAC technicians, plumbers, and general contractors who rely on powered fastening tools during installation and service work.
This bit is appropriate for residential and commercial applications where a 4 mm hex drive is required. The 6-inch overall length makes it well suited for deep-socket fastening tasks, panel installations, and equipment assembly where standard-length bits fall short. Technicians working on electrical enclosures, equipment cabinets, or mechanical assemblies will find the extended length useful for accessing fasteners behind brackets or within confined spaces.
Designed as an OEM-style replacement or supplemental bit for power screwdrivers and electric drills accepting a standard 0.25-inch hex shank, used with 4 mm hex-head fasteners.
This bit is installed and used by any trade professional operating a power screwdriver or variable-speed drill. Ensure the tool is powered off and the chuck is fully tightened before use. Do not use impact drivers unless the bit is rated for impact service. Inspect the bit for wear or damage before each use and replace if drive surfaces are rounded or cracked.
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