S-92912A106 ASTM A108, ASTM B633 Metric-to-Metric Female Hex Thread Adapters

Key Features & Benefits at a Glance

• Reliable Thread Conversion: Seamlessly adapts M4 to M3 metric threads with precision Class 6H fit, ensuring secure connections and preventing cross-threading in critical assemblies.
• Exceptional Strength & Durability: With a tensile strength of 78,000 psi and Rockwell B85 hardness, this adapter withstands high-stress applications without deformation or failure.
• Corrosion-Resistant Zinc Plating: Steel construction with zinc plating offers enhanced protection against rust and environmental wear, extending service life in harsh industrial settings.
• Easy Installation & Removal: External 6mm hex drive design allows for quick, tool-friendly installation and disassembly, reducing downtime during maintenance or adjustments.
• Compliance with Industry Standards: Meets ASTM A108 and ASTM B633 specifications, ensuring consistent quality and performance for engineering and manufacturing applications.
• RoHS 3 Environmental Compliance: Adheres to RoHS 3 (2015/863/EU) standards with exemption 6(a)-I, making it suitable for regulated industries requiring lead-restriction adherence.
• Compact & Efficient Design: Optimized thread lengths (11.1mm for M4, 6.4mm for M3) and hex length of 37mm provide space-saving adaptation without compromising strength.

Professional Applications & Engineering Value

This female hex thread adapter addresses common challenges in industrial assembly by providing a robust solution for metric thread conversion between M4 x 0.7mm and M3 x 0.5mm sizes. Engineered from zinc-plated steel, it combats corrosion in demanding environments like manufacturing plants and automotive systems, where exposure to moisture and chemicals is frequent. The Class 6H thread fit ensures precise alignment, reducing the risk of thread damage and improving load distribution in high-tensile applications. Its external hex drive facilitates efficient installation with standard tools, streamlining maintenance workflows. Ideal for machinery, equipment retrofitting, and precision instruments, this adapter enhances thread adaptation reliability while meeting stringent ASTM standards for consistent performance.

Specification Summary & Compliance

This adapter features metric thread sizes with M4 x 0.7mm (Thread Length: 11.1mm) and M3 x 0.5mm (Thread Length: 6.4mm), both adhering to Class 6H thread fit for precise ISO-compliant tolerances. The zinc-plated steel construction conforms to ASTM A108 and ASTM B633 manufacturing specifications, ensuring material integrity and performance. It is RoHS 3 (2015/863/EU) compliant with exemption 6(a)-I for lead as an alloying element in steel, supporting environmental and safety regulations in global supply chains.