S-91082A135 ASTM A108, ASTM B633 Inch-to-Metric Female Hex Thread Adapters

Key Features & Benefits at a Glance

• Seamless Inch-to-Metric Conversion: Enables reliable connection between 10-32 (inch) and M6 (metric) threaded components, eliminating compatibility issues in mixed-standard environments.
• Exceptional Durability & Corrosion Resistance: Constructed from zinc-plated steel to withstand harsh industrial conditions and prevent rust, extending service life.
• High Tensile Strength for Demanding Applications: With a 78,000 psi tensile strength and Rockwell B85 hardness, it handles high-stress loads without failure.
• Secure & Precise Thread Engagement: Features Class 2B (inch) and Class 6H (metric) thread fits ensuring tight, vibration-resistant connections.
• Easy Installation with Standard Tools: The external 1/2" hex drive allows for quick and firm tightening using common wrenches, reducing assembly time.
• Compliance with Industry Standards: Manufactured to meet ASTM A108 and ASTM B633 specifications, guaranteeing consistent quality and performance.
• Environmentally Responsible Sourcing: RoHS 3 compliant with exemption for lead as an alloying element in steel, supporting regulatory adherence in global markets.

Professional Applications & Engineering Value

This female hex thread adapter is engineered to solve critical challenges in industrial settings where inch and metric systems intersect. Its zinc-plated steel construction provides superior resistance to corrosion and wear, making it ideal for automotive, machinery, and construction applications that face exposure to moisture and chemicals. The precise Class 2B and 6H thread fits ensure leak-proof and stable connections, reducing the risk of loosening under vibration—common in heavy equipment. By enabling seamless adaptation between 10-32 and M6 threads, it minimizes downtime and inventory costs, allowing engineers to standardize components without sacrificing performance. The external hex drive design further enhances usability, supporting efficient maintenance and assembly in tight spaces.

Specification Summary & Compliance

This adapter maintains high dimensional accuracy with Class 2B (inch) and Class 6H (metric) thread tolerances, ensuring reliable fit and function. It adheres to manufacturing standards including ASTM A108 for steel bars and ASTM B633 for zinc plating, and is RoHS 3 (2015/863/EU) compliant with exemption 6(a)-I for lead as an alloying element in steel, supporting environmental and safety regulations.