Screwdriver Bits Bosch S29H4140S set, 40 pcs, 1/4" hex shank

Bosch S29H4140S set, 40 pcs, 1/4" hex shank is a comprehensive assortment of screwdriver bits designed for use with standard bit holders and quick-change chucks. The set contains a variety of common bit types and sizes intended for general assembly, repair and maintenance tasks with electric screwdrivers and cordless drills. The 1/4" hex shank ensures compatibility with most drivers and enables fast bit changes for workshop and on-site work.

Advantages

The kit groups multiple bit profiles into a single compact set, reducing the need to carry individual bits. Bits with a 1/4" hex shank provide secure seating in bit holders and quick-change chucks, improving torque transfer and minimizing wobble. The assortment covers common fastening requirements for household, automotive and light industrial applications, enabling efficient task switching without searching for separate parts.

Suitable for

• General assembly and construction tasks
• Appliance repair and maintenance
• Automotive trim and interior fastening
• Furniture assembly and DIY projects
• Workshop and on-site maintenance with power drivers

Key specifications

• Set size: 40 pieces
• Shank type: 1/4" hex shank for quick-change chucks and bit holders
• Material: hardened tool steel (typical for professional bits)
• Compatibility: suitable for electric screwdrivers and cordless drills with hex bit holders
• Bit profiles included: multiple common profiles and sizes for general fastening

How to use

Select the appropriate bit profile and size for the screw head and insert the 1/4" hex shank into the bit holder or quick-change chuck until it locks. Use the correct torque setting on the driver to match the screw material and size, and apply steady pressure while driving or removing fasteners. Replace worn or damaged bits to maintain secure engagement and prevent screw head damage.

Usage recommendations

Store bits in their case to keep the assortment organized and protect tips from damage. Match bit profile and size precisely to the screw head to reduce stripping. For prolonged or heavy-duty use, inspect bits regularly and replace those with worn or rounded tips.