S-90323A602 M2 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ensuring long-term reliability in harsh environments.
• Exceptional mechanical strength with a tensile strength of 85,000 psi and Rockwell B90 hardness, providing reliable performance under high-stress conditions.
• Precise alignment and secure positioning enabled by the precisely machined 3mm shoulder with tight diameter and length tolerances.
• Easy installation in confined spaces with the low-profile socket head and 1.5mm hex drive, allowing efficient assembly with standard tools.
• Consistent and reliable thread engagement due to the Class 6g thread fit and coarse 0.4mm pitch, reducing cross-threading risks.
• Broad regulatory compliance meeting RoHS 3 and REACH standards, making it suitable for global industrial and electronic applications.
• Optimized for automated assembly with smooth head texture and consistent metric dimensions, ensuring smooth feeding and driving processes.

Professional Applications & Engineering Value

This M2 shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to oxidation and chemical exposure, making it ideal for electronics, medical devices, and machinery operating in corrosive or cleanroom environments. The precise shoulder fit with minimal tolerances ensures accurate component positioning, eliminating misalignment and reducing wear in rotating parts or bearing mounts. Its low head profile and hex socket drive facilitate secure fastening in space-constrained applications, while the Class 6g coarse thread offers quick installation and high vibration resistance. These features collectively enhance assembly efficiency, minimize maintenance, and extend product lifecycle in demanding industrial fastener applications.

Specification Summary & Compliance

This shoulder screw adheres to metric system specifications with an M2 x 0.4mm coarse thread size and pitch, and a Class 6g thread fit per ISO standards for consistent engagement. The shoulder features a diameter of 3mm with a tolerance of -0.025 to 0 mm and a length of 3mm with a tolerance of 0 to 0.05 mm, ensuring precise assembly. It is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally sensitive and international markets.