S-90263A128 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction and passivated finish, ideal for harsh industrial environments
• Precise component alignment with controlled shoulder diameter tolerance (-0.025 to 0 mm) ensuring accurate positioning
• High mechanical strength with 70,000 psi tensile strength and Rockwell B79 hardness for reliable performance under load
• Secure hex drive engagement with 2mm socket head preventing stripping and enabling high-torque installation
• Consistent thread quality with Class 6g fit and M3 x 0.5mm coarse pitch for reliable fastening in various materials
• Extended service life with 16mm shoulder length providing stable bearing surface and reducing wear
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications

Professional Applications & Engineering Value

This M3 shoulder screw delivers exceptional engineering value in precision assembly applications where alignment accuracy and corrosion resistance are critical. The 316 Stainless Steel construction with passivated finish provides superior protection against chemical exposure and atmospheric corrosion, making it ideal for marine, chemical processing, and food equipment applications. The precisely machined shoulder with tight diameter tolerance ensures exact component positioning in rotating assemblies, jigs, and fixtures, eliminating the need for additional alignment components. The socket head hex drive design allows for high torque application in confined spaces, while the Class 6g thread fit guarantees consistent clamping force in automated assembly environments. These precision shoulder screws solve common industrial challenges of misalignment, corrosion-induced failure, and installation efficiency in demanding mechanical systems.

Specification Summary & Compliance

This metric shoulder screw features precise dimensional control with shoulder diameter tolerance of -0.025 to 0 mm and shoulder length tolerance of 0 to 0.05 mm. The M3 x 0.5mm coarse thread maintains Class 6g thread fit according to metric standards, ensuring reliable engagement. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental compliance for industrial and commercial applications worldwide. The combination of controlled tolerances, material certification, and regulatory adherence makes this fastener suitable for precision engineering requirements across multiple industries.