Wiha 71707 Screwdriver Insert Bit 6.3mm Hex Drive 25mm

Product Description

The WIHA 71707 is a hex-drive screwdriver insert bit designed for use with 6.3 mm (1/4 inch) bit holders and power screwdrivers. It measures 25 mm (1 inch) overall length and is sized for 5/16 inch cap screws using a 3/16 inch hex profile. This insert bit is built for fast bit changes on jobsites where repetitive fastening tasks demand consistent drive engagement. Electricians, HVAC technicians, and other trade professionals use insert bits like this in cordless drivers and impact-rated bit holders to speed up installation work. Sold in a package of 10, making it practical to keep spares on hand.

This insert bit suits applications where 5/16 inch hex cap screws are common, including panel assembly, equipment mounting, and general mechanical fastening in residential and light commercial settings. The 25 mm length fits standard quick-change bit holders without adapter extensions. Trades that frequently drive hex cap screws in tight or repetitive applications will find the 10-pack quantity practical for reducing downtime from worn bits.

Key Features

• 6.3 mm hex drive fits standard 1/4 inch bit holders and quick-change chucks
• 25 mm (1 inch) overall length for compact, flush-fit use in standard bit holders
• 3/16 inch hex profile sized for 5/16 inch cap screws
• 10-piece package quantity supports stocking spares on the truck or in the shop
• Insert bit style allows rapid swap in magnetic bit holders and power drivers

Compatibility

Designed as a replacement-style insert bit for use with standard 6.3 mm (1/4 inch) hex bit holders and screwdrivers accepting 25 mm insert bits.

Installation Notes

Insert bits are installed and removed by hand in compatible quick-change or magnetic bit holders — no tools required for the bit swap itself. Ensure the driver or tool is powered off or the battery is removed before changing bits on cordless tools. Verify the bit seats fully and locks into the holder before applying torque to avoid cam-out or bit ejection. Follow applicable safety practices per tool manufacturer guidelines and relevant trade codes when fastening electrical enclosures or mechanical assemblies.