S-90270A683 M5 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Precise component alignment ensured by the 6mm shoulder diameter with tight tolerance (-0.025 to 0 mm)
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing
• Secure and repeatable fastening through Class 6g thread fit and coarse M5x0.8 thread pitch
• Easy installation and removal with the smooth socket head design requiring standard tools
• Consistent dimensional accuracy with controlled shoulder length tolerance (0 to 0.05 mm) for uniform assembly
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries

Professional Applications & Engineering Value

This M5 shoulder screw is engineered to address critical alignment and durability challenges in precision assemblies. The 30mm shoulder length provides a stable bearing surface for rotating parts like gears, pulleys, and linkages, minimizing wear and maintaining concentricity. Manufactured from 18-8 stainless steel, it offers excellent resistance to oxidation and chemical exposure, making it suitable for automotive, machinery, and electronic enclosures. The socket head design allows for high-torque installation in confined spaces, while the Class 6g thread fit and coarse thread spacing ensure vibration resistance and quick assembly in high-volume production lines. Its right-hand thread and precise shoulder tolerances deliver reliable performance in automated systems, reducing maintenance downtime and improving operational efficiency.

Specification Summary & Compliance

This shoulder screw adheres to Metric system standards with an M5x0.8 thread size and Class 6g thread fit for consistent engagement. The shoulder diameter is maintained at 6mm with a tolerance of -0.025 to 0 mm, and the shoulder length is 30mm with a 0 to 0.05 mm tolerance, ensuring precise fit in machined components. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances, and is suitable for applications requiring material traceability and environmental safety.