S-91390A095 M2.5 x 4 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Exceptional holding power with Rockwell C45 hardness alloy steel construction, ensuring long-term reliability in demanding applications.
• Secure, non-slip installation using the compact 1.3mm hex drive, ideal for confined spaces and providing a positive grip.
• Optimized for rapid assembly with a coarse thread (0.45mm pitch), reducing installation time and cross-threading risks.
• Superior resistance to loosening from vibration, thanks to the cup tip design that bites into the contact surface.
• Precise thread fit (Class 5g6g) ensures consistent performance and ease of assembly with standard metric threaded components.
• Full compliance with DIN 916/ISO 4029 standards, guaranteeing dimensional accuracy and interchangeability in professional settings.
• Environmentally responsible manufacturing, meeting RoHS 3 and REACH regulations for safe use in regulated industries.

Professional Applications & Engineering Value

This M2.5 set screw is engineered from alloy steel and heat-treated to Rockwell C45 hardness to solve critical challenges in precision assemblies. Its headless design and compact 1.3mm hex drive allow for flush mounting in tight spaces, such as in machinery, automotive components, and electronic enclosures, where protrusions are not permissible. The right-hand coarse thread and Class 5g6g thread fit provide a robust, vibration-resistant connection that maintains clamp load under dynamic stresses. The cup tip securely engages with shafts or collars, preventing slippage and ensuring precise axial positioning. Ideal for set screw applications requiring high-strength and reliability, this fastener meets the rigorous demands of industrial maintenance and OEM production lines.

Specification Summary & Compliance

This metric set screw adheres to precise dimensional standards with a thread fit of Class 5g6g and is manufactured in compliance with DIN 916 and ISO 4029 specifications. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in environmentally conscious and regulated industrial applications.