[Reference materials included] You can easily and accurately check the dimensions of the tap hole diameter!
This catalog introduces the "Check Pins for Tap Pilot Holes" handled by Yamawa Manufacturing Co., Ltd. There are two types available: the straight type "CPC-S," which allows for checking several sizes of pilot hole diameters and depths with a set of five, and the tapered type "CPC-T," which enables simple checking of pilot hole diameter with just one pin. Both types are available for cutting taps and roll taps. Additionally, reference materials on "Pilot Hole Diameter and Engagement Rate of Internal Threads" and "What is Engagement Rate?" are included. [Contents] ■ Are you checking the pilot holes for taps? ■ Let's check the condition of the pilot holes ■ Pilot hole check pin for cutting taps (straight type) "CPC-S" ■ Pilot hole check pin for cutting taps (tapered type) "CPC-T" ■ Pilot hole check pin for roll taps (straight type) "CPR-S" ■ Pilot hole check pin for roll taps (tapered type) "CPR-T" ■ Reference materials *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.