S-91390A213 M20 x 25 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Exceptional holding power through high-strength alloy steel construction and Rockwell C45 hardness, ensuring reliable performance under heavy loads
• Precise thread engagement with Class 5g6g thread fit and coarse 2.5mm pitch, enabling quick installation and secure fastening in industrial applications
• Space-saving headless design with hex drive, allowing flush mounting where protruding fastener heads are undesirable
• Superior torque transmission via 10mm hex drive, providing excellent grip and reducing tool slippage during installation
• Enhanced material penetration with cup tip design, creating secure locking action and preventing component movement
• International compatibility through DIN 916/ISO 4029 compliance, ensuring interchangeability with global metric fastener systems
• Environmental responsibility with RoHS 3 and REACH compliance, meeting strict international regulatory standards for industrial use

Professional Applications & Engineering Value

This M20x2.5mm alloy steel set screw addresses critical engineering challenges in industrial assembly where vibration resistance and permanent positioning are paramount. The headless hex drive design provides flush mounting capabilities for machinery, automotive components, and precision equipment where space constraints exist. The cup tip configuration creates concentrated pressure points that bite into mating surfaces, preventing rotational slippage in high-torque applications. Manufactured from alloy steel with Rockwell C45 hardness, this metric set screw maintains dimensional stability under extreme mechanical stress, while the coarse thread pitch ensures rapid installation in production environments. Ideal for securing gears, pulleys, and collars onto shafts, this DIN 916/ISO 4029 compliant fastener delivers consistent performance in manufacturing, automation, and heavy equipment applications.

Specification Summary & Compliance

This set screw features M20x2.5mm coarse threads with Class 5g6g thread fit tolerance per ISO metric standards, ensuring precise dimensional accuracy. The 25mm length and 10mm hex drive provide standardized installation compatibility. Manufacturing complies with DIN 916 ISO 4029 specifications for dimensional and mechanical properties. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting current environmental regulations for industrial components.