{"id":5795,"date":"2025-12-25T01:34:00","date_gmt":"2025-12-25T01:34:00","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5795"},"modified":"2025-12-25T01:34:00","modified_gmt":"2025-12-25T01:34:00","slug":"thread-diameter-chart-major-pitch-minor","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/tr\/blog\/thread-diameter-chart-major-pitch-minor\/","title":{"rendered":"Thread Diameter Chart: Major, Pitch, Minor"},"content":{"rendered":"
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Introduction to Thread Diameters<\/h2>\n

Thread diameters are fundamental parameters in screw thread design, defining the geometry for proper fit and function in mechanical assemblies. The major diameter represents the outermost dimension, the pitch diameter the effective mating surface, and the minor diameter the innermost root. These values ensure interchangeability and strength, adhering to standards like ISO 965 for metric threads and ASME B1.1 for unified inch threads.<\/p>\n

Understanding these diameters is essential for manufacturing, inspection, and application in industries such as automotive, aerospace, and machinery. This chart provides detailed dimensions for external and internal threads, including tolerances for common classes like 6g\/6H (metric) and 2A\/2B\/3A\/3B (inch), to guide engineers in selecting appropriate fits.<\/p>\n