S-91067A126 M3 x 20 mm DIN 551, ISO 4766 Set Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Maximum holding power ensured by the M3 coarse thread (0.5 mm pitch) and Class 6g fit for secure fastening in various materials.
• Space-saving headless design allows for flush mounting where protruding heads are not feasible.
• Easy installation and adjustment with a simple slotted drive, requiring only basic tools.
• Precise alignment and positioning thanks to the flat tip design, preventing component movement.
• Compliance with international standards including DIN 551 (ISO 4766), ensuring consistent quality and interchangeability.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting strict regulatory requirements.

Professional Applications & Engineering Value

This M3 metric set screw is engineered to address common industrial challenges such as component slippage and corrosion-induced failure. The 18-8 stainless steel material provides excellent resistance to rust and oxidation, making it suitable for applications in machinery, automotive assemblies, and electronic enclosures exposed to moisture or chemicals. Its headless, slotted design and flat tip ensure a flush fit and concentrated clamping force, which is critical for securing gears, pulleys, and collars on shafts without interfering with adjacent components. The coarse thread with a 0.5 mm pitch and Class 6g thread fit offers quick assembly and reliable grip in soft or hard materials, reducing the risk of loosening under vibration. By integrating these features, this set screw delivers consistent performance in precision industrial applications, enhancing equipment durability and minimizing maintenance needs.

Specification Summary & Compliance

This set screw adheres to precise dimensional standards with a Metric M3 x 0.5 mm coarse thread and Class 6g thread fit for accurate engagement. It conforms to DIN 551 (equivalent to ISO 4766) specifications, ensuring uniformity and reliability in manufacturing. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and supporting sustainable procurement practices.