Manual screwdriver Wiha 42421 Single Standard screwdriver

Wiha 42421 Single Standard screwdriver, HEX 0.9, 40 mm blade length, 134 mm overall length, 12.5 g weight. The tool is designed for precise screw fastenings where careful handling and sensitivity are required. Its extra-long rotating cap and slim ergonomic handle with a soft grip provide controlled power transmission and ease of use for delicate work in precision mechanics, model-making and hobby applications.

Advantages

The extra-long rotating cap ensures optimum feed and allows quick and sensitive turning. The screwdriver handle size concept provides an optimal balance between precision and control. Careful workmanship and a slim handle with a soft grip enable controlled power transmission and comfortable, fatigue-reducing operation. The rotating cap is printed with screwdriver symbols to simplify selection of the correct profile.

Suitable for

Key specifications

How to use

Select the screwdriver with the matching HEX 0.9 profile printed on the rotating cap. Position the tip in the screw head and use the rotating cap to turn the screw smoothly for sensitive, controlled movement. Apply torque through the slim handle while maintaining a steady grip on the soft zone; use the quick-turning zone for rapid rotations when loosening or positioning screws, and the handle body for final tightening or controlled torque application.

Recommendations

Use the Wiha 42421 for small, precision screws and delicate assemblies. Avoid excessive torque beyond the limit of the small HEX 0.9 tip to prevent tip damage or screw head deformation. Keep the blade clean and inspect for wear; replace the tool if the tip is rounded.