S-91082A137 ASTM A108, ASTM B633 Inch-to-Metric Female Hex Thread Adapters
Inch-to-Metric Female Hex Thread Adapters
Image may differ from product. See technical specification for details.
Basic Information
Material & Strength Parameters
End A Thread Parameters
End B Thread Parameters
Hex Parameters
Drive Parameters
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Seamless Inch-to-Metric Conversion – Enables reliable connection between 6-32 and M8 threaded components, eliminating compatibility issues in mixed-standard assemblies.
- Exceptional Tensile Strength – Withstands up to 78,000 psi loading, ensuring dependable performance under high-stress industrial applications.
- Corrosion-Resistant Coating – Zinc-plated steel construction provides enhanced durability and protection against rust in demanding environments.
- Precision Thread Fit – Class 2B (inch) and Class 6H (metric) thread tolerances guarantee secure, vibration-resistant connections without cross-threading.
- Easy Installation & Removal – External 1/2" hex drive allows for quick tool engagement, reducing assembly time and labor costs.
- Rigorous Material Hardness – Rockwell B85 rating maintains thread integrity and adapter shape under repeated torque applications.
- Compliance with Industry Standards – Meets ASTM A108/B633 material specifications and RoHS 3 directives for quality-assured, safe usage.
Professional Applications & Engineering Value
This female hex thread adapter solves critical interoperability challenges in machinery, automotive, and equipment manufacturing where both inch (6-32) and metric (M8) fastening systems are present. The zinc-plated steel construction combined with Class 2B/6H thread fit ensures zero backlash and sustained alignment in high-vibration settings. Engineers benefit from the adapter’s 78,000 psi tensile strength and Rockwell B85 hardness, which prevent stripping and deformation under dynamic loads. Its external hex drive design simplifies maintenance in confined spaces, making it ideal for production lines, repair kits, and OEM assemblies requiring reliable inch-to-metric conversion without compromising mechanical integrity.
Specification Summary & Compliance
This adapter maintains precise Class 2B (inch) and Class 6H (metric) thread tolerances for consistent fit. Manufacturing complies with ASTM A108 (steel bar) and ASTM B633 (zinc plating) specifications. The product is RoHS 3 (2015/863/EU) compliant under exemption 6(a)-I for lead as an alloying element in steel, ensuring environmental regulatory adherence for global supply chains.
