S-91072A383 ASTM A108, ASTM B633 Inch-to-Inch Female Hex Thread Adapters

Key Features & Benefits at a Glance

• Seamless Thread Size Conversion – Effortlessly adapts between 6-32 and 8-32 thread sizes, eliminating compatibility issues and reducing assembly time.
• Superior Corrosion Resistance – Zinc-plated steel construction provides reliable protection against rust and environmental wear in demanding industrial settings.
• Exceptional Mechanical Strength – With a tensile strength of 75,000 psi and Rockwell B65 hardness, it withstands high-stress applications without deformation.
• Precision Thread Engagement – Class 2B thread fit ensures smooth, secure mating with male threads, minimizing cross-threading risks and vibration loosening.
• Convenient External Hex Drive – 1/4" hex size and 1-1/2" length offer ample torque application surface for quick installation and removal with standard tools.
• Rigorous Quality Assurance – Compliance with ASTM A108 and ASTM B633 guarantees consistent material properties and manufacturing standards.
• Environmentally Responsible – RoHS 3 compliant with exemption 6(a)-I, ensuring safe use in regulated industries while maintaining alloy performance.

Professional Applications & Engineering Value

This female hex thread adapter addresses critical challenges in industrial assembly by providing a robust thread size adaptation solution. Engineered from zinc-plated steel, it combats corrosion in harsh environments like manufacturing plants and outdoor equipment, where moisture and chemicals are prevalent. The Class 2B thread fit on both ends ensures precise alignment with male fasteners, reducing the risk of thread damage and improving joint integrity under dynamic loads. Its external hex drive design allows for high-torque installation, making it ideal for maintenance tasks, machinery repairs, and automotive systems where reliable inch thread adaptation is essential. By meeting ASTM A108 and ASTM B633 specifications, it delivers consistent performance in high-vibration applications, enhancing operational safety and reducing downtime.

Specification Summary & Compliance

This adapter maintains Class 2B thread fit tolerances for both 6-32 and 8-32 threads, ensuring compatibility with standard inch-series fasteners. Manufacturing adheres to ASTM A108 for steel bar properties and ASTM B633 for zinc plating, guaranteeing dimensional accuracy and surface durability. It is fully RoHS 3 (2015/863/EU) compliant with exemption 6(a)-I for lead as an alloying element in steel, supporting environmental regulations without compromising mechanical performance.