S-91390A637 M20 x 70 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with Rockwell C45 hardness alloy steel construction for maximum resistance to wear and deformation in demanding applications
• Precise and secure positioning thanks to the cup tip design that minimizes component surface damage while providing excellent grip
• Optimized for high-torque assembly with a robust 10mm hex drive that prevents tool slippage and ensures efficient installation
• Reliable thread engagement and interchangeability guaranteed by Class 5g6g thread fit and coarse 2.5mm pitch for faster installation and reduced cross-threading risk
• Long-term operational integrity ensured by compliance with DIN 916 / ISO 4029 standards for dimensional accuracy and performance
• Safe for regulated environments as it is fully RoHS 3 and REACH compliant, meeting strict international substance restrictions
• Versatile industrial compatibility with M20 metric coarse threading and 70mm length, making it ideal for a wide range of machinery and equipment

Professional Applications & Engineering Value

This alloy steel set screw is engineered to address critical challenges in industrial fastening, where vibration resistance, positional accuracy, and long-term reliability are paramount. The headless design with a 10mm hex drive allows for flush mounting in confined spaces, while the cup tip concentrates clamping force to prevent shaft or component slippage under dynamic loads. Manufactured to DIN 916 and ISO 4029 specifications, it provides consistent Class 5g6g thread fit for secure mating with corresponding internal threads, reducing the risk of assembly errors. Its M20 x 2.5mm coarse thread and 70mm length make it particularly suitable for heavy-duty applications such as securing gears, pulleys, and collars on rotating shafts in automotive, manufacturing, and machinery assembly, ensuring minimal maintenance and downtime.

Specification Summary & Compliance

This set screw adheres to precise dimensional and performance criteria, including M20 metric thread size with a 2.5mm coarse pitch and Class 5g6g thread fit tolerance as per ISO standards. It is manufactured in compliance with DIN 916 / ISO 4029 for dimensional accuracy and mechanical properties. The product is verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets environmental and safety regulations for hazardous substances.