These MSTH internal threaded air vent pins are professional precision mold fasteners, manufactured with high-quality mold steel for excellent hardness, wear resistance and stable mechanical performance, ensuring long service life in high-frequency mold operation and industrial production environments. Featuring standard internal thread design and precise air vent structure, these threaded cylindrical locating pins adopt strict dimensional tolerance control (especially M6 tolerance) and high-precision cylindrical finish, effectively realizing accurate positioning, reliable ventilation and stable fixing in mold assembly, avoiding displacement and ensuring smooth production. Designed as multi-functional combined mold pins, these locating dowels integrate functions of positioning, ventilation and threaded connection, widely used in mold manufacturing, injection molding equipment, stamping dies, mechanical positioning and precision fixture assembly projects. Complete specifications M4 M5 M6 are available to meet diverse precision mold matching demands. Each MSTH threaded mold pin undergoes strict precision inspection to ensure consistent dimensional accuracy and stable working performance. Factory-direct supply with sufficient stock, these precision locating air vent pins are the top choice for global mold manufacturers, hardware buyers and industrial engineering clients, providing cost-effective high-precision positioning solutions for mold and mechanical applications.