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The WIHA 74033 is a 10-piece set of power screwdriver bits designed for use with power drivers and bit-holder systems in demanding trade and industrial applications. Each bit features a standard slotted fastener profile with a 7/64 inch blade width and an overall length of 2-3/4 inches, making them suited for high-cycle driving tasks where bit wear is a routine factor. Constructed from steel, these bits are built to handle the torque demands of power tool operation. The set is packaged in a quantity of 10, giving installers and service technicians ready replacements on the job.
These bits are appropriate for electrical, HVAC, plumbing, and general mechanical service work where standard slotted fasteners are encountered. Common applications include panel cover screws, equipment access screws, and fixture mounting hardware. The 2-3/4 inch overall length provides adequate reach for recessed fasteners without requiring an extension. Trades that regularly work with legacy equipment and older fastener standards will find the slotted profile particularly relevant.
Designed for use with standard 1/4 inch drive power screwdrivers, impact drivers, and bit holders that accept industry-standard power bit shanks. Intended for standard slotted fastener applications.
Install into a 1/4 inch drive bit holder and confirm the bit is fully seated before driving. Inspect bits for wear or deformation before each use, as damaged slotted bits can slip and damage fastener heads. Power screwdriver bits should be matched to the fastener size to prevent cam-out and fastener damage. Retire and replace worn bits promptly, especially in high-cycle service environments.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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