S-92913A112 ASTM A108 Metric-to-Metric Female Hex Thread Adapters
Metric-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
- High-Strength Durability – Black-oxide steel construction with 78,000 psi tensile strength resists mechanical stress and extends service life in demanding environments.
- Precision Thread Compatibility – Class 6H thread fit on both M8 x 1.25 mm and M4 x 0.7 mm ends ensures secure, vibration-resistant connections without cross-threading risks.
- Easy Installation & Removal – External 13 mm hex drive with 50 mm length provides ample grip for standard wrenches, speeding up assembly and maintenance tasks.
- Corrosion-Resistant Finish – Black-oxide surface treatment enhances rust protection, making it suitable for humid or industrial settings.
- Material Reliability – Rockwell B85 hardness offers balanced toughness and machinability, reducing wear under repeated use.
- Regulatory Compliance – Meets ASTM A108 standards and RoHS 3 (2015/863/EU) with exemption, ensuring safe, industry-approved quality.
- Space-Efficient Design – Compact hex shape and dual female threads allow seamless metric-to-metric adaptation in confined assemblies.
Professional Applications & Engineering Value
This metric-to-metric female hex thread adapter solves critical challenges in machinery, automation, and equipment manufacturing by enabling reliable transitions between M8 and M4 threaded components. Its Black-Oxide Steel body, hardened to Rockwell B85, withstands high-torque applications and environmental exposure, preventing thread stripping and corrosion-induced failures. The Class 6H thread fit maintains alignment accuracy in pneumatic systems, electrical enclosures, and precision instruments, reducing downtime from loose fittings. With an external hex drive for tool accessibility, it streamlines maintenance in assembly lines and retrofit projects, ensuring consistent performance where metric thread conversion is essential for global component integration.
Specification Summary & Compliance
Thread sizes: M8 x 1.25 mm (16 mm length) and M4 x 0.7 mm (11.1 mm length), both with Class 6H thread fit per ISO standards. Manufactured from ASTM A108 steel, with a 13 mm external hex drive and 50 mm hex length. Compliant with RoHS 3 (2015/863/EU) under exemption 6(a)-I for lead as an alloying element in steel.
