Wiha 71336 Hex Insert Bit 1/4 in Drive 1/8 in Hex Impact Rated

Product Description

The WIHA 71336 is a hex screwdriver insert bit designed for fast, reliable fastening in professional trade applications. Built from steel and rated for impact use, this bit fits a standard 1/4 inch drive and accepts 1/8 inch hex fasteners. The overall length is 1 inch, making it a compact insert style suitable for use with impact drivers, bit holders, and power screwdrivers. Electricians, HVAC technicians, and other trade professionals use insert bits like this for repetitive fastening tasks where speed and durability matter. The impact rating means it can handle the rotational stress of pneumatic and cordless impact drivers without premature cracking or wear.

This bit is suited for standard hex fastening tasks across residential and commercial service work. It fits number 12 cap screws and is appropriate wherever a 1/8 inch hex drive is required. Common applications include panel work, equipment assembly, and mechanical fastening in tight or production-style workflows. The 1/4 inch drive connection is the industry-standard size, compatible with the vast majority of bit holders and impact-rated driver tools found on a service vehicle or job site.

Key Features

• Impact rated construction handles the stress of cordless and pneumatic impact drivers
• Steel construction for durability in demanding fastening applications
• 1/4 inch drive fits standard bit holders and quick-change chucks
• 1/8 inch hex tip for number 12 cap screws and standard hex fasteners
• Compact 1 inch overall length for use as a true insert bit in bit holders
• No ball end design for straightforward, full-engagement fastening

Compatibility

Designed as an OEM-style insert bit for use with any 1/4 inch drive bit holder, quick-change chuck, or impact driver accepting standard insert bits. Fits number 12 cap screw hex fasteners.

Installation Notes

Insert bits are installed and removed by hand into a 1/4 inch bit holder or quick-change chuck — no tools required for bit changes. Always ensure the bit is fully seated in the holder before applying torque to prevent camout or bit ejection. When used with impact drivers, verify the holder is also impact rated to avoid holder failure. Follow applicable NEC or equipment manufacturer guidelines when performing electrical fastening work.