Nut Driver Bit Wiha 04631

The Nut Driver Bit Wiha 04631 is a precision fastening accessory designed for demanding screwdriving tasks. Manufactured from high-grade chrome-vanadium steel and through-hardened, this 55 mm bit features a 25.4 / 4 mm (1/4") hexagonal shank and an integrated strong permanent magnet for secure screw retention. Compliant with DIN 3126 and ISO 1173 (style E 6.3) drive standards, the bit is suitable for use with compatible tool holders and screwdrivers and weighs 42 g, offering a balanced combination of durability and lightness.

Advantages

The Wiha 04631 nut driver bit provides reliable torque transmission thanks to its precisely formed geometry and hardened chrome-vanadium construction. The permanent magnet improves screw pickup and reduces the risk of dropping fasteners during installation. Standardized drive dimensions ensure compatibility with a wide range of commercial and industrial screwdriving tools, while the modest weight and compact length make the bit easy to handle in confined spaces.

Suitable for

• Assembly and maintenance work in trade and industry
• Fastening hex-head nuts and bolts in machinery and equipment
• Professional electrical, HVAC and mechanical installations
• DIY projects requiring precise nut driving in tight spaces

Key specifications

• Material: high-grade chrome-vanadium steel, through hardened
• Shank: hexagonal 25.4 / 4 mm (1/4")
• Length: 55 mm
• Drive standard: DIN 3126, ISO 1173 style E 6.3
• Weight: 42 g
• Magnet: strong permanent magnet for secure screw retention

How to use

Insert the 1/4" hexagonal shank into a compatible screwdriver handle or driver chuck that accepts DIN 3126 / ISO 1173 (E 6.3) bits. Position the bit on the nut or bolt head so the magnet holds the fastener in place, then apply steady torque with the driver until the fastener is tightened or loosened as required. Use controlled force to avoid over-torquing; the bit’s hardened construction is intended for repeated use under standard fastening loads.

Usage recommendations

Use the bit with tools rated for the intended torque and check regularly for wear or damage. Keep the bit clean and free of debris to maintain magnetic retention and fit accuracy. For high-torque applications beyond typical fastening tasks, select bits and drivers specifically rated for greater torque to avoid premature wear.