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The IRWIN IWAF344516 is a magnetic nutsetter bit designed for use with power screwdrivers and impact-ready hex-shank tool holders. The bit features a 5/16 inch hex drive size and a 1/4 inch shank, with a 4 inch overall length that provides extended reach in tight or deep fastener locations. The magnetic tip retains hex-head fasteners during driving, reducing drop-and-chase time on the job. This bit is a standard go-to for electricians, HVAC techs, and plumbers who are driving sheet metal screws, electrical box knockouts, or panel fasteners at volume.
This nutsetter fits common power screwdriver configurations and is well suited for residential and light commercial service work. The 4 inch OAL makes it practical for driving fasteners in recessed locations such as electrical enclosures, duct flanges, and equipment panels. The 1/4 inch hex shank is compatible with standard quick-change bit holders and most cordless drill drivers. Sold individually, it is a direct replacement or supplemental bit for any technician who burns through nutsetters on high-volume fastening tasks.
Designed for use with standard 1/4 inch hex quick-change bit holders and power screwdrivers that accept 1/4 inch shank nutsetter bits.
Install and remove this bit only when the tool is powered off or the battery is disconnected. Seat the shank fully into the bit holder before operating. Inspect the magnetic tip for wear or demagnetization periodically, as a weakened magnet increases fastener drop risk. This bit is intended for power tool use; applying excessive side-load or torque beyond the tool rating may cause bit failure.
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