Dormer E557 HSS Spiral Flute Tap

The Dormer E557 HSS Spiral Flute Tap is a versatile threading tool designed for blind hole applications in general purpose use. Manufactured from high-speed steel (HSS) with a bright coating, this tap is engineered to deliver reliable performance across both professional workshop environments and DIY projects at home.

Featuring a three-flute spiral design, this tap efficiently evacuates chips upward and away from the workpiece, preventing clogging and ensuring clean, accurate threads. Built to ISO 529 standards with metric coarse thread form, it's specifically suited for steel and cast steel materials with alloy content =10% and hardness <45HRC. The C 2-3 chamfer style provides smooth thread entry and reliable performance.

Available in thread diameters from M3 to M12 with corresponding metric pitches, this range covers the most commonly required sizes for threading operations.

Features and Benefits:
• HSS construction for durability and heat resistance during power tool operation
• Three-flute spiral design efficiently removes chips from blind holes
• ISO 529 standard ensures dimensional accuracy and reliability
• Bright coating provides corrosion resistance and smooth operation
• C 2-3 chamfer style for controlled thread starting
• Suitable for both professional engineering and home workshop applications