S-91072A398 ASTM A108 Inch-to-Inch Female Hex Thread Adapters
Inch-to-Inch Female Hex Thread Adapters
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Basic Information
Material & Strength Parameters
End A Thread Parameters
End B Thread Parameters
Hex Parameters
Drive Parameters
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Key Features & Benefits at a Glance
- Seamless Thread Conversion: Enables reliable transition between 4-40 and 8-32 thread sizes, eliminating compatibility issues in inch-based assemblies.
- Exceptional Durability: Made from Black-Oxide Steel with Rockwell B65 hardness, offering superior wear and corrosion resistance for harsh environments.
- High Tensile Strength: Withstands up to 75,000 psi tensile strength, ensuring secure connections under heavy loads and vibration.
- Precision Thread Fit: Features Class 2B thread fit on both ends for consistent, accurate engagement and reduced risk of cross-threading.
- Easy Installation & Removal: External hex drive with a 1/4" hex size allows for quick tool access and efficient torque application.
- Industry Compliance: Meets ASTM A108 specifications and is RoHS 3 compliant, supporting safe and regulated industrial use.
- Robust Design: Hex shape and ample thread lengths (1/4" and 7/16") provide stable, long-lasting performance in repetitive applications.
Professional Applications & Engineering Value
This female hex thread adapter is engineered to solve common challenges in industrial settings where precise inch-to-inch thread conversion is critical. By utilizing Black-Oxide Steel and a Rockwell B65 hardness rating, it resists corrosion and mechanical stress, making it ideal for machinery, automotive, and electronics assembly. The external hex drive and Class 2B thread fit ensure easy installation with standard tools, reducing downtime and improving workflow efficiency. Its ability to adapt 4-40 to 8-32 connections reliably supports applications requiring durable, high-strength fastening solutions without compromising on precision or compliance with industry standards like ASTM A108.
Specification Summary & Compliance
This adapter maintains Class 2B thread fit tolerances for both 4-40 and 8-32 threads, ensuring dimensional accuracy and reliable performance. It conforms to ASTM A108 manufacturing standards and is RoHS 3 (2015/863/EU) compliant with exemption 6(a)-I for lead as an alloying element in steel, meeting environmental and safety regulations for industrial use.
