Knowledge bag for when you're in trouble: What are the Unified screw grades '2B' and '2A'?
Resolving common questions and concerns about screws! Screw standards edition.
YAMAWA will respond to inquiries received from customers. This document includes detailed explanations as well. 【Contents】 ■Inquiry The machining drawing has "2B" or "2A" written next to 3/8-16UNC. What does that mean? *For more details, please refer to the PDF document linked below.
basic information
【Other Published Content】 ■Response ■Explanation ■Reference Materials *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.