S-91390A631 M16 x 90 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Superior holding power with a cup point design that bites into materials for secure, vibration-resistant fastening.
• Exceptional durability and wear resistance thanks to the alloy steel construction and Rockwell C45 hardness.
• Precise and reliable thread engagement ensured by the Class 5g6g thread fit for consistent performance in demanding applications.
• Easy installation and removal with an 8mm hex drive, providing a positive grip for high-torque assembly.
• Optimized for high-strength industrial applications with its M16 coarse thread and 2mm pitch, offering excellent load distribution.
• Guaranteed quality and interchangeability through compliance with the DIN 916 and ISO 4029 standards.
• Safe for use in regulated environments as it is RoHS 3 and REACH compliant, meeting strict environmental and safety directives.

Professional Applications & Engineering Value

This M16 set screw is engineered to solve critical challenges in industrial assembly where components are subject to high stress, vibration, and dynamic loads. The alloy steel material, hardened to Rockwell C45, provides the necessary tensile strength and fatigue resistance to prevent failure in heavy-duty machinery, automotive systems, and precision equipment. The cup point concentrates force on a small area, creating a strong mechanical lock that resists loosening, making it ideal for securing gears, pulleys, and collars on shafts. Its headless design allows for a flush installation in confined spaces, while the metric coarse thread ensures rapid assembly and robust performance. Adherence to DIN 916/ISO 4029 standards guarantees dimensional accuracy and reliability, providing engineers with a trusted component for mission-critical industrial applications.

Specification Summary & Compliance

This set screw features an M16 metric coarse thread with a 2mm pitch and a Class 5g6g thread fit, ensuring precise dimensional tolerances as per ISO standards. The manufacturing and quality are governed by the DIN 916 specification, which is identical to ISO 4029. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety requirements for industrial components.