S-91082A134 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 8-32 (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 without failure.
• Superior Corrosion Resistance – Zinc-plated steel construction offers durable protection against rust and environmental wear in industrial settings.
• Precision Thread Fit – Class 2B (inch) and Class 6H (metric) thread tolerances ensure secure, vibration-resistant connections with minimal backlash.
• Heavy-Duty Hex Drive – 1/2" external hex design allows for easy installation and removal using standard tools, enhancing workflow efficiency.
• High Hardness Rating – Rockwell B85 hardness maintains thread integrity and adapter shape under repeated use and torque applications.
• Compliance with Industry Standards – Meets ASTM A108 and ASTM B633 specifications, ensuring consistent quality and material reliability.

Professional Applications & Engineering Value

This female hex thread adapter addresses critical challenges in machinery maintenance, automotive assembly, and industrial equipment where inch-to-metric thread conversion is required. The zinc-plated steel material provides excellent corrosion resistance, extending service life in harsh environments. With a Rockwell B85 hardness and 78,000 psi tensile strength, it prevents stripping and deformation under high torque, ensuring reliable performance in heavy-duty applications. The precise Class 2B and 6H thread fits minimize play and vibration, reducing the risk of loosening in dynamic systems. Ideal for OEMs and MRO professionals, this adapter streamlines inventory by replacing multiple custom parts with a single, versatile solution.

Specification Summary & Compliance

This adapter features precision Class 2B (inch) and Class 6H (metric) thread fits with dimensions including 1/2" hex size and 2-1/2" length. It complies with ASTM A108 and ASTM B633 manufacturing standards and is RoHS 3 (2015/863/EU) compliant under exemption 6(a)-I for lead as an alloying element in steel, ensuring environmental and regulatory adherence.