S-90323A444 M3 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish for long-lasting performance in harsh environments
• Precise component alignment through controlled shoulder diameter tolerance (-0.025 to 0 mm) ensuring accurate positioning in assemblies
• High mechanical strength with Rockwell B95 hardness and 80,000 psi tensile strength for reliable load-bearing applications
• Secure fastening with consistent thread engagement thanks to Class 6g thread fit and coarse 0.5mm pitch for efficient installation
• Space-saving low-profile design with smooth socket head profile allowing clearance in compact assemblies
• Reliable drive performance with hex socket drive preventing cam-out and ensuring proper torque transmission
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for safe use across global markets

Professional Applications & Engineering Value

These precision shoulder screws deliver critical engineering value in applications requiring exact component positioning and rotational control. The 35mm shoulder length with precise diameter tolerance provides a stable bearing surface for gears, pulleys, and linkages, eliminating the need for additional bushings or spacers. Manufactured from 18-8 stainless steel with a passivated finish, these metric shoulder screws resist corrosion in industrial environments while maintaining dimensional stability. The hex socket drive and low-profile head enable installation in confined spaces common in machinery, automation equipment, and precision instruments. With Class 6g thread fit and coarse pitch, these screws ensure reliable engagement while reducing assembly time in production environments.

Specification Summary & Compliance

This M3 shoulder screw features a 0.5mm coarse pitch thread with Class 6g thread fit per metric standards. The shoulder maintains precise dimensional control with diameter tolerance of -0.025 to 0 mm and length tolerance of 0 to 0.05 mm. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and global market acceptance. The combination of Rockwell B95 hardness and 80,000 psi tensile strength provides reliable mechanical performance for demanding industrial applications.