S-91390A145 M8 x 20 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with alloy steel construction and Rockwell C45 hardness for reliable, long-term fastening in demanding industrial environments.
• Secure and efficient installation using the 4mm hex drive, providing excellent torque transmission and reducing the risk of tool slippage.
• Precise thread engagement with Class 5g6g thread fit and coarse M8 x 1.25mm thread, ensuring easy assembly and consistent performance.
• Enhanced grip and resistance to loosening from the cup point tip, which bites into the mating surface for vibration-resistant applications.
• Global compliance and reliability by meeting DIN 916 and ISO 4029 standards, guaranteeing dimensional accuracy and interchangeability.
• Safe for various industries with full RoHS 3 and REACH compliance, ensuring environmental safety and regulatory adherence.
• Space-saving headless design allows for flush mounting in assemblies where protruding components are not feasible.

Professional Applications & Engineering Value

This M8 set screw is engineered from alloy steel with a Rockwell C45 hardness to address common industrial challenges such as vibration-induced loosening and high-stress fatigue. The cup point tip provides superior biting action into shafts and components, making it ideal for securing gears, pulleys, and collars in machinery, automotive, and automation systems. Its hex drive ensures easy installation with standard tools, while the coarse metric thread (M8 x 1.25mm) facilitates quick assembly and disassembly. Fully compliant with DIN 916 and ISO 4029, this headless screw offers reliable performance in precision engineering applications, reducing maintenance needs and enhancing operational safety.

Specification Summary & Compliance

This set screw adheres to Class 5g6g thread fit tolerances as per ISO metric standards, ensuring precise dimensional accuracy for consistent performance. Manufactured in compliance with DIN 916 and ISO 4029 specifications, it meets stringent industry requirements for metric set screws. The product is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, confirming its safety for use in regulated environments without hazardous substances.