S-91084A115 ASTM A108 Inch-to-Metric Female Hex Thread Adapters

Key Features & Benefits at a Glance

• Seamless Inch-to-Metric Conversion: Effortlessly connect 1/4"-20 and M4 threaded components, eliminating compatibility issues and reducing assembly time.
• Exceptional Strength & Durability: Built from Black-Oxide Steel with a 78,000 psi tensile strength and Rockwell B85 hardness to withstand high-stress applications and prevent stripping.
• Superior Corrosion Resistance: The black-oxide surface treatment provides a durable protective layer, extending the adapter's service life in demanding industrial environments.
• Precision Thread Fit for Leak-Free Connections: Class 2B (inch) and Class 6H (metric) thread fits ensure tight, secure, and reliable connections that resist vibration loosening.
• Optimized for High-Torque Application: The 1/2" external hex drive and generous 2 1/2" hex length offer superior grip for easy installation and removal with standard tools.
• Guaranteed Quality & Consistency: Manufactured to meet ASTM A108 standards, ensuring dimensional accuracy and material reliability in every batch.
• Compliant for Global Use: Adheres to RoHS 3 directives, making it suitable for use in regulated markets and environmentally conscious operations.

Professional Applications & Engineering Value

This Inch-to-Metric Female Hex Thread Adapter is engineered to solve critical connectivity challenges in machinery, automotive, and heavy equipment assembly. The Black-Oxide Steel construction provides excellent resistance to rust and wear, which is vital for components exposed to moisture, oils, and mechanical stress. The precise Class 2B and 6H thread fits prevent cross-threading and ensure a perfect seal, eliminating fluid or air leaks in pneumatic and hydraulic systems. By enabling a reliable interface between different measurement systems, this adapter reduces inventory needs for multiple connectors and minimizes downtime during equipment servicing or international project execution, delivering significant engineering value through enhanced operational efficiency and assembly reliability.

Specification Summary & Compliance

This adapter guarantees dimensional precision with Class 2B (inch) and Class 6H (metric) thread fits. It is manufactured in compliance with the ASTM A108 specification for standard carbon steel bars. The product is RoHS 3 (2015/863/EU) compliant with exemption 6(a)-I for lead as an alloying element in steel, ensuring it meets stringent environmental and safety regulations for global industrial use.