S-91084A108 ASTM A108 Inch-to-Metric Female Hex Thread Adapters

Key Features & Benefits at a Glance

• Seamless Inch-to-Metric Conversion: Effortlessly bridge 8-32 (inch) and M3 (metric) systems, eliminating compatibility issues and reducing the need for multiple components.
• Exceptional Tensile Strength: Withstands up to 78,000 psi, ensuring reliable performance in high-stress applications and preventing mechanical failure.
li>Precision Thread Fit: Class 2B and Class 6H thread fits guarantee secure, vibration-resistant connections and minimize the risk of cross-threading during installation.
• Enhanced Durability & Corrosion Resistance: The black-oxide steel finish provides a protective layer against rust and wear, extending the adapter's service life in harsh industrial environments.
• Superior Material Hardness: Rockwell B85 hardness offers excellent resistance to deformation under load, maintaining thread integrity over repeated use.
• Standardized External Hex Drive: The 1/4" hex allows for easy installation and removal with common tools, streamlining assembly and maintenance workflows.
• Regulatory Compliance & Quality Assurance: Manufactured to ASTM A108 standards and RoHS 3 compliant, ensuring material quality and environmental safety for global supply chains.

Professional Applications & Engineering Value

This female hex thread adapter is engineered to solve critical challenges in multi-standard assembly lines and equipment servicing. Its core value lies in providing a robust and precise interface between inch (8-32) and metric (M3) fastening systems, which is common in global machinery, automotive, and aerospace applications. The black-oxide steel construction, combined with a Rockwell B85 hardness, ensures the adapter can endure vibrational forces and corrosive conditions without compromising the Class 2B/6H thread fit. This eliminates connection failures, reduces inventory complexity by consolidating adapter types, and enhances overall assembly reliability, making it an indispensable component for engineers requiring dependable thread conversion in demanding environments.

Specification Summary & Compliance

This adapter guarantees dimensional accuracy with Class 2B (inch) and Class 6H (metric) thread fits. It is manufactured in compliance with the ASTM A108 specification for standard quality carbon and alloy steel bars. The product is RoHS 3 (2015/863/EU) compliant under exemption 6(a)-I, confirming its adherence to environmental regulations for hazardous substances.