S-91084A129 ASTM A108 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.
• Superior Corrosion Resistance: The black-oxide steel finish provides enhanced protection against rust and wear, extending service life in harsh industrial environments.
• High Tensile Strength & Durability: With a 78,000 psi tensile strength and Rockwell B85 hardness, it withstands high-stress applications without stripping or failing.
• Secure External Hex Drive: The 1/2" external hex allows for easy installation and removal using standard wrenches, ensuring a tight, slip-resistant fit.
• Precision Thread Fit: Features Class 2B (inch) and Class 6H (metric) thread tolerances for accurate, vibration-resistant mating with minimal backlash.
• Compliance with Industry Standards: Manufactured to ASTM A108 specifications and RoHS 3 compliant, ensuring material consistency and environmental safety.
• Extended Engagement Length: 2 1/2" hex length offers ample grip for torque tools, reducing the risk of rounding and improving operator safety.

Professional Applications & Engineering Value

This female hex thread adapter is engineered to solve critical challenges in industrial and mechanical systems where inch-to-metric conversions are required. The black-oxide steel construction, combined with precise Class 2B and 6H thread fits, ensures leak-proof and vibration-resistant connections in high-torque applications such as machinery assembly, automotive systems, and heavy equipment. Its external hex drive and robust 78,000 psi tensile strength allow for secure fastening in confined spaces, reducing downtime and maintenance costs. Ideal for OEMs and MRO professionals, this adapter maintains integrity under cyclic loading, supporting efficient operations in global supply chains with mixed measurement standards.

Specification Summary & Compliance

This adapter meets ASTM A108 material standards and features inch thread Class 2B and metric thread Class 6H tolerances for precise fit. It is RoHS 3 (2015/863/EU) compliant with exemption 6(a)-I, ensuring adherence to environmental regulations without compromising performance in steel alloy applications.