S-90278A737 M3.5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
• Enhanced torque transmission and reduced tool slippage with the hex socket drive and 2.5 mm drive size
• Precise component alignment and spacing enabled by the accurately machined 8 mm shoulder with tight tolerances
• Excellent thread engagement and durability from the Class 6g thread fit and coarse pitch design
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
• Broad regulatory compliance meeting RoHS 3 and REACH standards for safe use in various industries
• Smooth head texture for clean installation and reduced risk of surface damage

Professional Applications & Engineering Value

This M3.5 shoulder screw is engineered to address critical alignment and mounting challenges in precision assemblies. The 18-8 stainless steel provides excellent resistance to rust and corrosion, making it ideal for machinery, electronics, and automotive components exposed to moisture or chemicals. The hex socket head allows for high-torque installation without cam-out, while the precise shoulder acts as a pivot, bearing surface, or spacer, eliminating the need for additional parts. With a Class 6g thread and coarse pitch, it ensures quick assembly and reliable performance in high-vibration environments. Its compliance with RoHS and REACH standards further supports its use in regulated sectors, providing a dependable metric shoulder screw solution for OEMs and maintenance teams.

Specification Summary & Compliance

This precision shoulder screw features an M3.5x0.6 metric thread with a Class 6g thread fit and 5 mm thread length. The shoulder diameter is 5 mm with a tolerance of -0.025 to 0 mm, and the shoulder length is 8 mm with a tolerance of 0 to 0.05 mm, ensuring precise fit and alignment. Manufactured from 18-8 stainless steel, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, guaranteeing it is free from hazardous substances and suitable for industrial and electronic applications.