Wiha 74986 Hex Screwdriver Insert Bit Set 10 Piece

Product Description

The WIHA 74986 is a 10-piece hex screwdriver insert bit set designed for use with 1/4-inch hex shank power tools and manual bit holders. The set includes both inch and metric hex sizes, covering the most common fastener dimensions encountered in electrical, mechanical, and general trade work. Weighing 0.34 pounds, the kit is compact enough for a tool bag or service van. Tradespeople who need a reliable assortment of hex bits for fastener driving across mixed hardware will find this set covers the core sizes in a single package.

This bit set is suited for residential and light commercial service work where hex-drive fasteners appear across panels, equipment enclosures, HVAC components, and general mechanical assemblies. The combination of inch and metric sizes in one set reduces the need to carry separate assortments when working on equipment with mixed fastener standards. Electricians, HVAC technicians, plumbers, and general maintenance professionals are the primary users of this type of bit set.

Key Features

• 10-piece set covering both inch and metric hex sizes
• Inch sizes included: 1/4, 1/8, 3/16, 5/32, 7/32, and 9/64 inches
• Metric sizes included: 3.00 mm, 4.00 mm, 5.00 mm, and 6.00 mm
• Fits standard 1/4-inch hex shank power bit holders and manual drivers
• Lightweight at 0.34 pounds for easy portability

Compatibility

Designed for use with standard 1/4-inch hex shank bit holders, including power drills, impact drivers, and manual screwdrivers that accept 1/4-inch insert bits.

Installation Notes

Insert bits should be seated fully and securely into the bit holder before use to prevent slipping or cam-out on fastener heads. When using with an impact driver, confirm the driver is rated for insert bit use, as some impact tools require dedicated impact-rated bits. Inspect bits for wear or rounding before each use, and replace any bit that no longer seats cleanly in the fastener socket.