S-90323A493 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and reducing maintenance costs.
• Precise alignment and smooth rotation thanks to the 40mm shoulder with tight tolerances, minimizing wear and ensuring reliable performance in assemblies.
• High strength and durability with 80,000 psi tensile strength and Rockwell B95 hardness, providing long-lasting reliability under heavy loads.
• Easy installation and space-saving design featuring a low-profile socket head and 5mm hex drive for secure tightening in confined spaces.
• Accurate thread engagement with Class 6g thread fit and M8x1.25 coarse threads, ensuring consistent fastening and reducing the risk of cross-threading.
• Compliance with environmental standards including RoHS 3 and REACH, making it safe for use in regulated industries and global markets.
• Optimized for industrial applications with a passivated finish that enhances corrosion resistance and extends service life.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address common challenges in precision machinery, automation systems, and assembly fixtures. The 18-8 stainless steel material offers excellent resistance to rust and oxidation, crucial for environments exposed to moisture or chemicals. Its low-profile socket head and hex drive design allow for easy access in tight spaces, while the 40mm shoulder length with minimal tolerance ensures accurate component alignment, reducing vibration and misalignment issues. The Class 6g thread fit and coarse thread pitch provide reliable fastening in dynamic applications, making it ideal for use in robotics, conveyor systems, and electronic enclosures where durability and precision are paramount.

Specification Summary & Compliance

This shoulder screw features precise dimensional tolerances, including a shoulder diameter tolerance of -0.025 to 0 mm and shoulder length tolerance of 0 to 0.05 mm, ensuring consistent performance. It adheres to metric thread standards with M8x1.25 coarse threads and Class 6g thread fit for reliable engagement. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for industrial and electronic applications without hazardous substances.