S-98621A116 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Enhanced durability and wear resistance from TiCN coating, extending service life in high-friction applications
• Precise component alignment ensured by the smooth shoulder with tight diameter tolerance (-0.025 to 0 mm)
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing performance
• Secure and efficient installation using standard 2 mm hex drive, preventing stripping and ensuring consistent torque application
• Accurate thread engagement with Class 6g fit and M3x0.5 coarse thread design for vibration resistance
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries

Professional Applications & Engineering Value

These precision shoulder screws are engineered to solve critical alignment challenges in industrial machinery, automation systems, and precision instruments. The 18-8 stainless steel base material provides excellent corrosion resistance, while the TiCN coating significantly reduces wear in high-cycle applications. The precisely machined 12mm shoulder with minimal diameter tolerance acts as a reliable pivot or spacer, eliminating misalignment in assemblies. With M3x0.5 coarse threads and Class 6g thread fit, these socket head shoulder screws maintain secure fastening under vibration, making them ideal for robotics, conveyor systems, and electronic enclosures where dimensional stability is paramount.

Specification Summary & Compliance

This metric shoulder screw features M3x0.5 coarse threads with Class 6g thread fit and precise shoulder dimensions (4mm diameter with -0.025 to 0 mm tolerance, 12mm length with 0 to 0.05 mm tolerance). Manufactured from 18-8 stainless steel with TiCN coating, it meets Rockwell B55 hardness and 70,000 psi tensile strength requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations for environmental safety.