S-90278A436 M2 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and extended service life.
• Precise component alignment ensured by the 3mm shoulder diameter with tight tolerances, reducing assembly errors and improving product quality.
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness, providing reliable performance under load.
• Secure and efficient installation using a standard 1.5mm hex drive, allowing for high torque application without stripping.
• Consistent thread engagement with Class 6g thread fit and coarse 0.4mm pitch, enabling quick assembly and vibration resistance.
• Environmental and regulatory compliance with RoHS 3 and REACH standards, ensuring safe use in global markets.
• Versatile right-hand metric thread (M2x0.4) for broad compatibility in machinery, electronics, and precision equipment.

Professional Applications & Engineering Value

This M2 shoulder screw is engineered to address critical alignment and durability challenges in industrial applications. The 18-8 Stainless Steel material offers excellent resistance to rust and corrosion, making it suitable for use in electronics, automation systems, and medical devices where environmental factors are a concern. The precise shoulder diameter of 3mm acts as a reliable locating feature, preventing lateral movement and ensuring accurate positioning of components like gears, pulleys, and bearings. Combined with a Class 6g thread fit and coarse pitch, it facilitates rapid assembly while maintaining strong holding power, reducing the risk of loosening due to vibration. The socket head design with a 1.5mm hex drive allows for compact installation in confined spaces, enhancing design flexibility and operational efficiency in precision engineering projects.

Specification Summary & Compliance

This shoulder screw features a Class 6g thread fit per metric standards, ensuring dimensional accuracy for the M2x0.4 coarse thread. The shoulder diameter is precisely controlled at 3mm with a tolerance of -0.025 to 0 mm, and the shoulder length is 7mm with a 0 to 0.05 mm tolerance, supporting high-precision assembly. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and regulated industrial use.