S-91390A197 M16 x 80 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Superior vibration resistance thanks to the cup point tip design that bites into mating surfaces for secure, long-term fastening
• Exceptional strength and durability provided by the alloy steel construction with a Rockwell C45 hardness rating
• Reliable and precise fit ensured by the M16x2mm coarse thread with Class 5g6g tolerance for consistent performance
• Secure and efficient installation enabled by the 8mm hex drive, allowing for high torque application without head protrusion
• Guaranteed material safety and compliance with RoHS 3 and REACH regulations, making it suitable for regulated industries
• Broad industrial compatibility due to compliance with DIN 916 / ISO 4029 standards for metric set screws
• Optimized for high-stress applications with its 80mm length and headless design, providing deep engagement and a flush finish

Professional Applications & Engineering Value

This M16 set screw is engineered to solve critical challenges in industrial assembly where vibration resistance and secure positioning are paramount. The alloy steel material, hardened to Rockwell C45, provides the core strength needed to prevent stripping and deformation under high loads. Its cup point design concentrates force on a small area, creating a permanent indentation in the shaft or component it secures, which effectively locks it in place against rotational forces and vibrations common in machinery, motors, and power transmission systems. The coarse thread (2mm pitch) and Class 5g6g thread fit ensure rapid installation and a reliable grip, even in applications with minor misalignments. As a headless fastener with an 8mm hex drive, it is ideal for confined spaces where a flush surface is required, offering a clean aesthetic and eliminating snagging hazards.

Specification Summary & Compliance

This set screw conforms to the dimensional and tolerance requirements of DIN 916 / ISO 4029. The metric thread is specified as M16x2mm with a Class 5g6g thread fit, ensuring precise dimensional accuracy for the external thread. The product is manufactured to meet material and safety regulations, including RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant standards.