Example of precision comparison for pipe threads in times of trouble
Common questions and concerns about screws resolved! Screw standards edition.
YAMAWA will respond to the inquiries received from customers. This document also includes a comparison table of the effective diameter tolerance ranges for pipe threads. 【Contents】 ■Inquiry There are various types of "pipe threads" such as G, PF, R, Rc, and PT, but is there any material that clearly shows their relationships at a glance? I hear explanations that they are the same standard with just different symbols, but I don't understand. Additionally, I cannot grasp the differences between the current JIS standards and the old JIS standards. *For more details, please refer to the PDF document linked below.
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【Other Published Content】 ■Response ■Comparison Table of Effective Diameter Tolerance Ranges for Various Pipe Threads *For more details, please refer to the PDF document or feel free to contact us.
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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.