S-91390A210 M20 x 20 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Exceptional holding power with coarse 2.5mm pitch threads for rapid installation and secure fastening in demanding applications.
• Superior durability and wear resistance from alloy steel construction and Rockwell C45 hardness, ensuring long service life under high stress.
• Precise and reliable thread engagement with Class 5g6g thread fit, minimizing the risk of cross-threading and ensuring consistent performance.
• Easy installation and removal using a standard 10mm hex key, providing high torque transmission without the need for a protruding head.
• Secure positioning and minimal surface damage thanks to the cup tip design, which concentrates force for improved grip on the mating part.
• Guaranteed interchangeability and quality through compliance with DIN 916 / ISO 4029 standards, ensuring dimensional accuracy and reliability.
• Safe for use in regulated industries as it is RoHS 3 and REACH compliant, meeting strict environmental and safety standards.

Professional Applications & Engineering Value

This M20 set screw is engineered to solve critical fastening challenges in industrial machinery, automotive assemblies, and heavy equipment. The alloy steel material and Rockwell C45 hardness provide excellent resistance to vibration loosening and shear forces, making it ideal for permanent or semi-permanent applications where headless design is required to save space. The coarse metric thread with a 2.5mm pitch ensures quick assembly and strong holding power in soft materials or where frequent disassembly is not needed. The hex drive and cup tip work together to deliver maximum clamping force without slipping, reducing the risk of component shift in high-stress environments. This DIN 916 / ISO 4029 compliant fastener is a reliable choice for engineers seeking a durable, standards-based solution for precise axial location and locking of components.

Specification Summary & Compliance

This set screw features a Metric M20 x 2.5mm coarse thread with a Class 5g6g thread fit for standard tolerance and reliable engagement. It is manufactured in accordance with DIN 916 ISO 4029 specifications, ensuring dimensional precision and performance consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environmentally conscious and regulated industrial markets.