S-90323A481 M6 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
• Precise component alignment thanks to the 8mm shoulder diameter with tight tolerance for reduced vibration and wear.
• High-strength performance offering 80,000 psi tensile strength and Rockwell B95 hardness for demanding applications.
• Secure and flush installation enabled by the low-profile socket head and 4mm hex drive, saving space and preventing snagging.
• Reliable thread engagement with Class 6g fit and coarse M6x1mm thread for quick assembly and consistent clamping force.
• Accurate positioning ensured by the 25mm shoulder length with minimal tolerance, critical for machinery and automation.
• Environmental and regulatory safety through RoHS 3 and REACH compliance, meeting global industry standards.

Professional Applications & Engineering Value

This M6 shoulder screw is engineered to solve critical alignment and durability challenges in precision industrial applications. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to corrosion and oxidation, extending service life in moist or chemical-exposed settings. The low-profile socket head design allows for compact installations where space is limited, while the 25mm shoulder length with tight tolerances ensures precise location of components like gears, pulleys, and bearings—reducing misalignment and mechanical failure. With a Class 6g thread fit and coarse pitch, it facilitates rapid and secure fastening in automation equipment, CNC machinery, and assembly jigs, delivering reliable performance under high-stress conditions.

Specification Summary & Compliance

This shoulder screw adheres to metric system standards with an M6x1mm thread size and pitch, Class 6g thread fit for precise engagement, and shoulder dimensions including an 8mm diameter (-0.025 to 0 mm tolerance) and 25mm length (0 to 0.05 mm tolerance). It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances and suitable for global industrial use.