S-90323A216 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and passivated finish, ideal for harsh industrial environments.
• Precise alignment and secure component positioning thanks to the 4mm shoulder diameter with tight tolerance (-0.025 to 0 mm).
• High mechanical strength and durability with a Rockwell B95 hardness and 80,000 psi tensile strength for demanding applications.
• Reliable and secure fastening with a Class 6g thread fit and coarse M3x0.5mm thread for robust assembly.
• Easy installation in confined spaces using the low-profile socket head and 2mm hex drive.
• Compliance with global environmental standards, being RoHS 3 and REACH compliant for safe and responsible use.
• Consistent performance and interchangeability ensured by metric thread standards and precise shoulder length of 12mm.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to solve critical alignment and wear issues in precision assemblies. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to corrosion and oxidation, extending service life in machinery, electronics, and automotive components. The precisely machined 4mm shoulder diameter with minimal tolerance ensures accurate location of parts, reducing vibration and misalignment. The low-profile socket head allows for compact designs and easy access with a standard hex key, making it ideal for applications where space is limited and reliability is paramount. Its Class 6g thread fit and coarse thread pitch offer quick assembly and high resistance to loosening under dynamic loads, providing dependable performance in industrial settings.

Specification Summary & Compliance

This shoulder screw adheres to metric system standards with an M3x0.5mm coarse thread and Class 6g thread fit for consistent dimensional accuracy. The shoulder diameter tolerance is -0.025 to 0 mm, and shoulder length tolerance is 0 to 0.05 mm, ensuring precise fits. It is manufactured from 18-8 stainless steel with a passivated surface treatment and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial applications.