S-91082A133 ASTM A108, ASTM B633 Inch-to-Metric Female Hex Thread Adapters

Key Features & Benefits at a Glance

• Seamless Inch-to-Metric Conversion - Enables reliable connections between 6-32 (inch) and M6 (metric) threaded components, eliminating compatibility issues in mixed-standard assemblies.
• Exceptional Tensile Strength - Withstands up to 78,000 psi, providing robust performance under high-stress conditions and reducing the risk of mechanical failure.
• Superior Corrosion Resistance - Zinc-plated steel construction offers enhanced durability against rust and environmental degradation, extending service life in harsh industrial settings.
• Precision Thread Fit - Class 2B (inch) and Class 6H (metric) thread fits ensure tight, secure connections with minimal backlash, maintaining alignment and load distribution.
• Easy Installation & Removal - External hex drive with 1/2" hex size allows for quick tool engagement using standard wrenches, speeding up assembly and maintenance tasks.
• High Hardness for Wear Resistance - Rockwell B85 hardness minimizes thread wear and deformation during repeated use, ensuring consistent performance over time.
• Regulatory Compliance & Quality Assurance - Meets ASTM A108 and ASTM B633 standards, and is RoHS 3 compliant (with exemption 6(a)-I), ensuring material safety and adherence to international regulations.

Professional Applications & Engineering Value

This female hex thread adapter is engineered to solve critical challenges in industrial environments where inch-to-metric conversions are required. Made from zinc-plated steel, it provides excellent corrosion resistance, making it ideal for outdoor machinery, automotive assemblies, and manufacturing equipment exposed to moisture or chemicals. The Class 2B and 6H thread fits guarantee precise alignment, reducing the risk of cross-threading and component damage during installation. With an external hex drive and generous 2 1/2" hex length, it offers superior grip for torque application, facilitating quick adjustments in tight spaces. This adapter ensures reliable performance in high-vibration applications, such as conveyor systems or hydraulic fittings, by maintaining secure connections under dynamic loads. Its compliance with ASTM standards and RoHS 3 underscores its suitability for global supply chains, providing engineers with a dependable solution for mixed-thread assemblies.

Specification Summary & Compliance

This adapter features precise Class 2B (inch) and Class 6H (metric) thread fits, ensuring dimensional accuracy and compatibility. It adheres to ASTM A108 and ASTM B633 manufacturing standards, guaranteeing material consistency and performance. The product is RoHS 3 (2015/863/EU) compliant with exemption 6(a)-I for lead as an alloying element in steel, meeting environmental and safety requirements for industrial use.