S-91084A102 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 Thread Conversion – Enables reliable connection between 2-56 inch and M3 metric components without compromising assembly integrity
- High-Torque External Hex Drive – 3/16" hex with 1" length provides superior grip for maximum torque transmission in confined spaces
- Exceptional Mechanical Strength – 78,000 psi tensile strength withstands heavy loads and vibration in demanding industrial environments
- Optimized Thread Compatibility – Class 2B (inch) and Class 6H (metric) thread fits ensure precise engagement with standard fasteners
- Corrosion-Resistant Black-Oxide Finish – Extends service life while maintaining dimensional stability in harsh operating conditions
- Regulatory Compliance Assurance – Meets ASTM A108 specifications and RoHS 3 requirements for global industrial applications
- Dual Measurement System Ready – Eliminates compatibility issues in equipment using both inch and metric threading standards
Professional Applications & Engineering Value
This female hex thread adapter solves critical interoperability challenges in multinational manufacturing and equipment maintenance. The black-oxide steel construction provides superior corrosion resistance while maintaining Rockwell B85 hardness for repeated installation cycles. Engineers specify this adapter for precision machinery, automotive assembly, and electronic enclosures where reliable inch-to-metric adaptation is essential. The external hex drive design allows full torque application without stripping, while the Class 2B/6H thread fits guarantee vibration-resistant connections in dynamic load conditions. Its 78,000 psi tensile strength makes it ideal for structural applications requiring dependable thread conversion without compromising mechanical performance.
Specification Summary & Compliance
Manufactured to ASTM A108 standards with Class 2B (inch) and Class 6H (metric) thread tolerances. Features 2-56 to M3 thread conversion with 0.5 mm pitch and 6.4 mm thread length. Compliant with RoHS 3 (2015/863/EU) under exemption 6(a)-I for lead as steel alloying element. The adapter maintains dimensional stability across dual measurement systems with 3/16" hex drive and 1" hex length for standardized tool compatibility.
