S-91390A178 M12 x 40 mm DIN 916, ISO 4029 Set Screws

Key Features & Benefits at a Glance

• Superior holding power thanks to alloy steel construction and Rockwell C45 hardness, ensuring long-term reliability in demanding applications.
• Easy installation and removal with a standard 6mm hex drive, compatible with common tools for efficient assembly.
• Precise thread engagement and consistent performance guaranteed by Class 5g6g thread fit and coarse 1.75mm pitch.
• Secure, non-slip fastening from the cup tip design, which bites into surfaces to prevent loosening under vibration.
• Space-saving headless profile ideal for applications where a flush or low-profile finish is required.
• Full compliance with DIN 916/ISO 4029 standards, ensuring interchangeability and quality for industrial use.
• Environmentally responsible manufacturing with adherence to RoHS 3 and REACH regulations.

Professional Applications & Engineering Value

This M12 set screw is engineered to address common industrial challenges such as component slippage and fastener failure under stress. Made from high-strength alloy steel and heat-treated to Rockwell C45 hardness, it resists wear and deformation in high-torque applications. The headless design with hex drive allows for compact assembly in machinery, automotive, and tooling systems, while the coarse metric thread and cup tip ensure a firm grip on shafts, collars, and pulleys. By meeting DIN 916 and ISO 4029 specifications, it provides reliable performance in precision engineering, reducing maintenance needs and downtime.

Specification Summary & Compliance

This metric set screw features M12 x 1.75mm coarse threads with a Class 5g6g thread fit for precise tolerance. It complies with DIN 916 and ISO 4029 manufacturing standards and is verified to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe and consistent quality for industrial use.