S-91082A107 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 M2.5 (metric) threaded components, eliminating compatibility issues in mixed-standard assemblies.
• Exceptional Tensile Strength: Withstands up to 78,000 psi for dependable performance in high-stress applications, reducing the risk of mechanical failure.
• Superior Corrosion Resistance: Zinc-plated steel construction provides enhanced durability against rust and environmental degradation, extending service life.
• Precision Thread Fit: Manufactured to Class 2B (inch) and Class 6H (metric) standards for consistent, secure engagement and minimized cross-threading.
• Easy Installation & Removal: External hex drive with a 1/4" hex size and 1 1/2" length offers superior torque application and tool accessibility.
• High Material Hardness: Rockwell B85 hardness ensures resistance to deformation under load, maintaining thread integrity over repeated use.
• Regulatory Compliance & Safety: Meets ASTM A108 and ASTM B633 specifications, and is RoHS 3 compliant for environmentally responsible sourcing.

Professional Applications & Engineering Value

This Inch-to-Metric Female Hex Thread Adapter is engineered to solve critical challenges in industries where equipment from different regions with varying thread standards must be integrated. The zinc-plated steel construction, combined with high tensile strength and Rockwell B85 hardness, ensures reliable performance in demanding environments such as automotive assembly, industrial machinery, and electronic enclosures. The precision Class 2B/6H thread fit guarantees leak-proof and vibration-resistant connections, while the external hex drive design allows for quick installation with standard tools, reducing assembly time and labor costs. Ideal for maintenance, repair, and OEM applications, this adapter provides a durable, compliant solution for seamless metric-to-inch conversions.

Specification Summary & Compliance

This adapter features precise dimensional accuracy with Class 2B (inch) and Class 6H (metric) thread fit standards, ensuring reliable engagement. It is manufactured in compliance with ASTM A108 and ASTM B633 specifications for material and plating quality. The product is RoHS 3 (2015/863/EU) compliant under exemption 6(a)-I, confirming adherence to environmental regulations for lead content in steel alloys.