Hand Impact Drivers

About Hand Impact Drivers

Hand impact drivers are essential manual tools that convert hammer strikes into powerful rotational force, making them invaluable for removing seized, corroded, or over-tightened screws and fasteners. Unlike powered alternatives, these mechanical tools use an internal cam-and-hammer mechanism to generate significantly more torque than standard screwdrivers, whilst simultaneously applying downward pressure to prevent the bit from slipping out of the screw head. MyToolShed.co.uk stocks a comprehensive range of hand impact drivers from trusted manufacturers including Wera, Draper, Sealey, and Facom.

Available as complete kits or individual components, our selection includes impact drivers with 1/2" square drive or hexagon shank connections, compatible with a wide range of impact-rated screwdriver bits and sockets. Whether you need a comprehensive set for equipping a new workshop or replacement bits for existing tools, you'll find professional-grade options suitable for automotive, engineering, and general maintenance applications.

Applications

Hand impact drivers are relied upon across numerous trades and industries:

• Motor mechanics and auto electricians: Removing seized engine components and corroded fixings on older vehicles
• Plant and machinery fitters: Maintaining industrial equipment with fasteners exposed to harsh environments
• Marine engineers: Working with salt-corroded fixings on boats and marine equipment
• Agricultural engineers: Servicing farm machinery exposed to moisture and chemicals
• HVAC engineers: Removing painted-over or weathered screws on external units
• Restoration specialists: Working on classic cars, machinery, and furniture with period fixings
• Maintenance engineers: General equipment servicing across all industries
• DIY enthusiasts: Automotive projects, restoration work, and older property maintenance

Choosing The Right Hand Impact Drivers

Drive Size: The 1/2" square drive is the most versatile option, offering compatibility with a vast range of sockets and adaptors. Hex shank models suit primarily screwdriver applications, though many sets at MyToolShed.co.uk include adaptors for both.

Set Contents: Complete kits typically include the impact driver body, commonly used bits (Pozi, Phillips, slotted, and hex), and socket adaptors. These represent excellent value for those starting out or equipping a new toolbox.

Bit Quality: Only use impact-rated bits designed to withstand sudden rotational forces. Standard bits can shatter under impact use, creating serious safety hazards. Ensure sets include Pozi bits, which are ubiquitous in UK applications.

Build Quality: Professional-grade drivers from Wera, Facom, and Sealey feature hardened steel construction and precision mechanisms for consistent long-term performance. Look for comfortable handles with good grip and positive reversing mechanisms.

Safety Information

Always wear safety glasses when using hand impact drivers, as the striking action can cause worn bits to shatter or dislodge debris. Use only impact-rated bits—never standard screwdriver bits—and inspect them regularly for wear or damage. Ensure proper alignment with the fastener and use an appropriate hammer (typically 500g to 1kg) for striking. Verify the direction setting before use, and secure your workpiece properly to prevent movement from impact forces.

Frequently Asked Questions

Can I use regular screwdriver bits in a hand impact driver?

No, you must only use impact-rated bits specifically designed for impact applications. Regular bits are manufactured from different steel grades and can shatter under the sudden forces generated, creating a serious safety hazard.

What's the difference between a hand impact driver and a powered impact driver?

Hand impact drivers are manual tools that convert hammer strikes into rotational force, ideal for loosening seized screws without requiring electricity or batteries. Powered impact drivers deliver rapid impacts for driving screws quickly. Hand versions excel at removal of corroded fasteners, whilst powered versions suit repetitive fastening applications.

My impact driver isn't loosening a stuck screw—what should I try?

Apply penetrating oil and allow it to work for several minutes or overnight for severely corroded fixings. Ensure you're using the correct size impact-rated bit with perfect fit, and verify the driver is set to the loosening direction. Try alternating between loosening and tightening strikes to help break the corrosion bond.