S-91082A102 ASTM A108, ASTM B633 Inch-to-Metric Female Hex Thread Adapters

Key Features & Benefits at a Glance

• Seamless Inch-to-Metric Conversion: Effortlessly connect 2-56 (inch) to M3 (metric) components, eliminating compatibility issues in mixed-standard assemblies.
• Exceptional Tensile Strength: Withstands up to 78,000 psi, providing reliable performance under high-stress conditions and reducing the risk of mechanical failure.
• Superior Corrosion Resistance: Zinc-plated steel construction offers enhanced durability and protection against rust in demanding industrial environments.
• Optimized Torque Application: The external hex drive and 3/16" hex size allow for secure tool engagement and easy installation with standard wrenches.
• Precision Thread Fit: Features Class 2B (inch) and Class 6H (metric) thread fits, ensuring tight, secure connections with minimal backlash.
• High Material Hardness: Rockwell B85 hardness provides excellent wear resistance, maintaining thread integrity through repeated use.
• Regulatory Compliance & Quality Assurance: Meets ASTM A108 and RoHS 3 standards, guaranteeing material consistency and environmental safety for global supply chains.

Professional Applications & Engineering Value

This precision female hex thread adapter is engineered to solve critical interoperability challenges in industries where inch and metric threaded systems coexist. The zinc-plated steel construction, combined with a Rockwell B85 hardness, ensures long-term reliability in applications exposed to vibration, moisture, and mechanical stress, such as automotive assembly, electronic enclosures, and precision machinery. The external hex drive design facilitates quick and secure installation, reducing assembly time while maintaining a robust connection. By providing a dependable 2-56 to M3 thread conversion, this adapter minimizes downtime and component mismatch, enhancing operational efficiency in multi-standard engineering environments.

Specification Summary & Compliance

This adapter ensures dimensional accuracy with Class 2B (inch) and Class 6H (metric) thread fits, adhering to standardized tolerances for secure mating. It is manufactured in compliance with ASTM A108 and ASTM B633 specifications, guaranteeing material and performance consistency. The product is RoHS 3 (2015/863/EU) compliant under exemption 6(a)-I, ensuring it meets environmental regulations for lead content in steel alloys, making it suitable for global industrial and electronic applications.