JIS B 4304 (ISO compatible) center hole drill
Pursuing the original performance of center hole drills! Promoting standardization with ISO standards!
The original purpose of the "Center Drill" is to be a drill specifically for center hole processing, but it has also been widely used for other applications such as chamfering, positioning, and drilling holes in thin plates. As a result, there has been a tendency to sacrifice some of its original processing performance in order to meet the demands of various hole processing capabilities. However, in developing the new ISO standard center drills, our company has returned to its roots and pursued the original processing performance. 【Product Lineup】 ■ Type A 60° CESA ■ Type A 90° CEQA ■ Type B 60° CESB ■ Type R CEIR *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.