DEDRA 07A040 threading tool

The Dedra 07A040 tap wrench is a manual tool designed for holding and turning straight shank taps sized M3 to M12. With an overall length of 200 mm, it provides sufficient leverage for hand threading and rethreading operations in metalworking, machinery maintenance, and general workshop tasks. The tool is compatible with standard straight shank taps within the specified size range and is intended for use where controlled, manual cutting of internal threads is required.

Advantages

The tap wrench offers a simple, durable construction that facilitates secure grip and reliable torque transmission to the tap shank. Its 200 mm length increases mechanical advantage for easier turning by hand, while the adjustable chuck accommodates a range of tap diameters without the need for additional adapters. The tool’s plain design makes it easy to inspect, clean, and maintain during regular workshop use.

Suitable for

• Hand threading new internal threads in metal and softer materials
• Rethreading or cleaning damaged threads in maintenance and repair
• Small-scale metalworking, machinery servicing, and fitting tasks
• Use where controlled manual torque is preferred over powered tapping

Key specifications

• Compatible tap sizes: M3 to M12
• Overall length: 200 mm
• Type: manual tap wrench for straight shank taps
• Adjustment: chuck-type clamping for varying tap diameters

How to use

Select a straight shank tap within the M3–M12 range and insert it into the wrench’s chuck, ensuring the tap is seated straight and clamped securely. Position the tap perpendicular to the workpiece and apply steady, controlled clockwise rotation to cut the thread; use occasional reverse turns to clear chips and prevent binding. Maintain appropriate cutting fluid and moderate pressure; back the tap out periodically to remove debris and check thread progress. After use, release the chuck, remove the tap, and clean the wrench before storage.

Usage recommendations

For best results, match the tap type and thread size to the material being worked, use suitable cutting fluid for metal threading, and operate the 200 mm tap wrench with steady, even force. Avoid excessive torque to prevent tap breakage and ensure safe, repeatable hand threading.