S-91072A405 ASTM A108 Inch-to-Inch Female Hex Thread Adapters

Key Features & Benefits at a Glance

• Superior corrosion resistance with Black-Oxide Steel finish, extending service life in demanding industrial environments.
• Exceptional mechanical strength with 75,000 psi tensile strength and Rockwell B65 hardness for reliable performance under high stress.
• Precision thread engagement with Class 2B fit on both sides ensures secure, vibration-resistant connections.
• Versatile thread conversion from 4-40 to 1/4"-20, enabling seamless compatibility between different fastener systems.
• Easy installation and removal with a 1/2" external hex drive and 2 1/2" length for standard tool access.
• Compliance with industry standards including ASTM A108 and RoHS 3, ensuring quality and environmental safety.
• Robust female-to-female design provides a durable, reliable link in complex assembly applications.

Professional Applications & Engineering Value

This female hex thread adapter is engineered to solve critical connectivity challenges in industrial assemblies. Its Black-Oxide Steel construction offers enhanced corrosion protection, reducing maintenance needs in harsh conditions. The Class 2B thread fit on both 4-40 and 1/4"-20 sides ensures precise alignment and minimizes the risk of cross-threading, a common issue in repetitive assembly lines. With a 75,000 psi tensile strength and Rockwell B65 hardness, it withstands high torque and load demands in machinery, automotive, and heavy equipment applications. The external hex drive allows for quick installation using standard wrenches, improving workflow efficiency. This adapter is ideal for converting thread sizes in precision engineering projects where reliability and dimensional accuracy are paramount.

Specification Summary & Compliance

This adapter features Class 2B thread fit on both sides, ensuring dimensional accuracy per standard inch specifications. It complies with ASTM A108 for material consistency and mechanical properties. The product is RoHS 3 (2015/863/EU) compliant with exemption 6(a)-I, adhering to environmental regulations while maintaining performance. Thread sizes are precisely manufactured to 4-40 and 1/4"-20 with respective lengths of 1/4" and 5/8", providing reliable adaptation in industrial fastener systems.