S-91073A122 ASTM A582 Inch-to-Metric Female Hex Thread Adapters

Key Features & Benefits at a Glance

• Seamless Inch-to-Metric Conversion: Effortlessly connect 2-56 inch and M3.5 metric threaded components, eliminating compatibility issues and reducing assembly time.
• Superior Corrosion Resistance: Constructed from 18-8 Stainless Steel, offering excellent durability and long-term performance in harsh or humid industrial environments.
• High Mechanical Strength: With a Rockwell B80 hardness and 85,000 psi tensile strength, this adapter withstands high torque and mechanical stress without stripping or failing.
• Precision Thread Engagement: Features Class 2B (inch) and Class 6H (metric) thread fits for a secure, vibration-resistant connection that minimizes the risk of loosening.
• Convenient External Hex Drive: The 1/4" external hex design allows for easy installation and removal using standard wrenches, speeding up maintenance and adjustments.
• Rigorous Quality Assurance: Manufactured to meet ASTM A582 specifications, ensuring consistent dimensional accuracy and reliable performance in critical applications.
• Global Regulatory Compliance: Fully compliant with RoHS 3 and REACH standards, making it safe for use in regulated industries and international markets.

Professional Applications & Engineering Value

This female hex thread adapter is engineered to solve the common challenge of interfacing between inch (2-56) and metric (M3.5) fastening systems in industrial assemblies. Its 18-8 Stainless Steel construction provides exceptional corrosion resistance, which is vital for applications in electronics, automotive, and machinery exposed to moisture or chemicals. The precise Class 2B and 6H thread fits ensure a tight, reliable seal that prevents thread galling and cross-threading, reducing downtime and maintenance costs. With an external hex drive and robust design, it enables quick tool access and high-torque handling, making it ideal for precision equipment, aerospace components, and automated systems where inch-to-metric conversion is frequently required. This adapter enhances assembly flexibility and efficiency, supporting seamless integration in global supply chains.

Specification Summary & Compliance

This adapter ensures high dimensional accuracy with Class 2B thread fit for the 2-56 inch side and Class 6H thread fit for the M3.5 metric side, adhering to standard thread tolerances for secure fastening. It is manufactured in compliance with ASTM A582 for material and performance consistency. The product is also verified to be RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for hazardous substances.