Solving the problems of tapping medium-hard carbon steel and alloy steel!
"MHRZ" is a roll tap suitable for tapping processing of medium-hard carbon steel and alloy steel. It has a high tapping torque, making it capable of stable internal thread processing even on SCM440 (hardened) with a hardness of 35HRC, which has been considered difficult to process with roll taps until now. The surface roughness of the internal threads and the adoption of roll taps also resolve issues such as chip troubles. 【Features】 - Achieves reduced torque through our unique specifications - Significantly improved durability with materials and coatings that excel in wear resistance - Enables stable thread processing on hardened materials (up to 35HRC) - Can be used with water-soluble cutting oils *For more details, please refer to the PDF document or feel free to contact us.
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Since our founding in 1923, the YAMAWA Group has been dedicated to researching and developing the highest quality cutting tools—such as taps, dies, and center drills—to meet the ever-evolving technological needs of the market. Guided by the founding spirit of contributing to the progress and development of Japan’s machinery industry, we continue to pursue excellence as specialists in cutting tools. YAMAWA products are trusted across a wide range of industries, from space exploration and aerospace to automotive, shipbuilding, machine tools, home appliances, and IT-related sectors—both in Japan and worldwide. Staying true to our philosophy of providing “Reliable Screw Threads”, we constantly refine our technology and quality management systems. As Japan’s first tap manufacturer to obtain ISO 9001 certification, we take pride in our heritage while striving to advance innovation and deliver cutting tools that support manufacturing around the world.