S-91084A103 ASTM A108 Inch-to-Metric Female Hex Thread Adapters
Inch-to-Metric 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 inch-to-metric conversion - Enables reliable connections between 4-40 and M2.5 threaded components without compatibility issues
- Exceptional durability - Black-oxide steel construction provides superior corrosion resistance and extended service life in harsh environments
- High-strength performance - 78,000 psi tensile strength and Rockwell B85 hardness ensure reliable operation under heavy loads
- Precision threading - Class 2B and 6H thread fits guarantee secure, vibration-resistant connections with minimal backlash
- Easy installation and removal - 3/16" external hex drive allows for quick assembly using standard tools
- Industry compliance - Meets ASTM A108 standards and RoHS 3 requirements for quality assurance and environmental safety
- Space-efficient design - Compact 1" hex length provides optimal accessibility in confined assembly spaces
Professional Applications & Engineering Value
This female hex thread adapter solves critical compatibility challenges in industrial environments where inch-to-metric conversion is required. The Black-Oxide Steel construction with Rockwell B85 hardness provides exceptional wear resistance against repeated assembly cycles, while the 78,000 psi tensile strength ensures structural integrity under dynamic loads. The precision Class 2B/6H thread fits eliminate cross-threading risks and maintain alignment in precision equipment, making it ideal for industrial machinery, automotive systems, and electronic enclosures. The external hex drive design facilitates quick installation in hard-to-reach areas, significantly reducing assembly time and labor costs in maintenance and manufacturing applications.
Specification Summary & Compliance
This adapter features precision Class 2B (inch) and Class 6H (metric) thread fits ensuring dimensional accuracy across both measurement systems. Manufactured to ASTM A108 specifications for material quality and performance consistency. The product is RoHS 3 (2015/863/EU) compliant with exemption 6(a)-I for lead as an alloying element in steel, meeting international environmental standards while maintaining mechanical properties. Thread dimensions include 4-40 (1/4" length) to M2.5 (4.8 mm length, 0.45 mm pitch) with 3/16" external hex drive configuration.
