S-91217A105 M4 x 4 mm DIN 914, ISO 4027 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and prolonged service life.
• Enhanced vibration resistance due to the 120° cone point design, ensuring secure fastening and preventing loosening in dynamic applications.
• Precise thread engagement with Class 6g fit and coarse M4 x 0.7mm thread, providing reliable holding power and easy assembly.
• High-strength durability from Rockwell B80 hardness, offering excellent mechanical performance under load.
• Space-saving headless design allows for flush mounting in tight spaces, maximizing application versatility.
• Secure hex socket drive with 2mm key size enables efficient installation and high torque transmission without slippage.
• Compliance with international standards including DIN 914/ISO 4027, ensuring consistent quality and interchangeability.

Professional Applications & Engineering Value

This M4 hex socket set screw is engineered to address critical fastening challenges in precision machinery, automotive assemblies, and electronic enclosures. The 18-8 stainless steel material provides excellent resistance to rust and oxidation, making it suitable for demanding environments where moisture or chemicals are present. Its headless design and cone point tip allow for deep embedding into shafts or components, creating a firm grip that counters rotational forces and vibration-induced loosening. With a coarse thread pitch of 0.7mm, it ensures quick installation and robust clamping force, reducing assembly time while maintaining reliable performance in high-stress applications. Ideal for securing gears, pulleys, and collars, this screw delivers consistent engineering value by enhancing equipment durability and operational safety.

Specification Summary & Compliance

This set screw adheres to DIN 914 / ISO 4027 standards with a Class 6g thread fit for precise dimensional accuracy. It features a metric M4 x 0.7mm coarse thread, right-hand direction, and a length of 4mm. The manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for industrial use worldwide.