Cross-Border Hexagonal Shank Compound Tap High-Speed Steel Three-In-One Machine Tap Drill Bit Tapping Drill Integrated Spiral Tap for Blind Holes Metric Coarse Thread 6mm Thread Diameter 75mm Total Length with Internal Cooling 0.1mm Accuracy
Cross-Border Hexagonal Shank Compound Tap for Blind Holes – 6mm High-Speed Steel Three-In-One Machine Tap

This compound tap combines drilling and tapping into a single tool, streamlining machine operations for blind holes. With a 6mm thread diameter, metric coarse thread, and 75mm total length, it is designed for precise internal threads. The hexagonal shank ensures secure grip in compatible chucks, while internal cooling aids chip evacuation during use. Available in multiple material and coating options, it suits a range of materials from wood to thin stainless steel plates.
Features and Construction

Built for efficiency and accuracy, this compound tap integrates a drill point and tap in one piece. Its spiral groove design directs chips upward for internal removal, reducing clogging in blind holes.
Material and Build
Two high-speed steel variants are offered: 4341 for lower-hardness materials like wood, aluminium, and iron, and 6542 (M2) for higher hardness and durability, capable of handling steel plates and thinner 304 stainless steel sheets up to about 2mm. Coatings include natural finish or German titanium for extended wear resistance.
Size and Practical Fit
The tap has a 6mm thread diameter, 0.6mm pitch, and 0.1mm accuracy. Its shank diameter is 6.35mm with a 6mm square body, and total length is 75mm with a 20mm useful length. Five chip pockets aid cutting performance.
Uses and Placement

This tool is designed for machine tapping operations, particularly in applications requiring blind holes with metric coarse threads.
Machining and Professional Use
Ideal for machine shops and fabrication work, the compound tap reduces cycle time by combining two operations. Internal cooling helps maintain tool life during prolonged use on harder materials.
DIY and Home Workshop Use
Hobbyists working with aluminium or mild steel will find the 4341 models suitable for lighter tasks. For occasional work on steel plates, the 6542 models offer added durability.
Benefits and Buying Value

By eliminating separate drilling and tapping steps, this tool improves efficiency and reduces setup time.
Reuse and Low Maintenance
High-speed steel construction provides good wear resistance. Proper chip removal and internal cooling help maintain cutting performance over multiple uses.
Why Choose This Product
Available in a range of sizes (M3 to M10) and configurations (short or long, natural or titanium-plated, single or set of 6), this compound tap offers flexibility to match specific job requirements. Its hexagonal shank fits standard tool holders.
