S-91082A136 ASTM A108, ASTM B633 Inch-to-Metric Female Hex Thread Adapters

Key Features & Benefits at a Glance

• Seamless Thread Conversion - Enables reliable connection between 1/4"-20 (inch) and M6 (metric) systems without compromising structural integrity
• Exceptional Durability - Zinc-plated steel construction provides superior corrosion resistance for extended service life in harsh environments
• High-Strength Performance - 78,000 psi tensile strength and Rockwell B85 hardness ensure reliable operation under heavy loads and vibration
• Precision Thread Compatibility - Class 2B (inch) and Class 6H (metric) thread fits guarantee secure, leak-free connections in critical applications
• Easy Installation & Removal - External hex design with 1/2" drive size allows for standard wrench access in confined spaces
• Industry Compliance Assurance - Meets ASTM A108 and ASTM B633 specifications for consistent quality and performance standards
• Environmentally Responsible - RoHS 3 (2015/863/EU) compliant construction supports sustainable manufacturing initiatives

Professional Applications & Engineering Value

This female hex thread adapter solves critical compatibility challenges in industrial equipment maintenance, manufacturing systems, and machinery upgrades where inch-to-metric conversion is required. The zinc-plated steel construction provides essential corrosion protection in demanding environments while maintaining the 78,000 psi tensile strength necessary for high-vibration applications. The precisely machined Class 2B and Class 6H threads ensure leak-proof connections in hydraulic systems, pneumatic equipment, and assembly lines, eliminating the need for custom machining or multiple adapters. The external hex drive with 2 1/2" length provides superior torque application capability, making it ideal for maintenance technicians and production engineers working with mixed-standard equipment.

Specification Summary & Compliance

This adapter features precision Class 2B (inch) and Class 6H (metric) thread fits with 1/4"-20 to M6 conversion capability. Manufactured to ASTM A108 and ASTM B633 specifications, it ensures dimensional accuracy and performance reliability. The product is RoHS 3 (2015/863/EU) compliant with exemption 6(a)-I for lead as an alloying element in steel, meeting international environmental standards while maintaining required mechanical properties.