S-90318A970 M6 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh environments and chemical exposure
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
• Precise alignment and positioning thanks to the precisely machined shoulder with tight diameter and length tolerances
• Space-saving design with an ultra-low socket head for applications with limited clearance
• Reliable fastening performance with Class 6g thread fit and M6x1mm coarse pitch for quick assembly and vibration resistance
• Secure drive engagement using a standard 4mm hex key, preventing cam-out and tool slippage
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use

Professional Applications & Engineering Value

This M6 shoulder screw is engineered to solve critical alignment and durability challenges in industrial assemblies. The 316 Stainless Steel material provides excellent resistance to corrosion from chemicals, saltwater, and extreme temperatures, making it perfect for marine, chemical processing, and food machinery applications. The precise shoulder fit acts as a pivot, bearing surface, or locator, eliminating the need for additional spacers or bushings and reducing assembly time and parts count. The ultra-low socket head and coarse pitch metric thread ensure a low-profile, secure fastening even in tight spaces, while the high tensile and shear strength guarantees long-term reliability under dynamic loads and vibration, preventing joint failure and maintenance downtime.

Specification Summary & Compliance

This precision shoulder screw features an M6x1mm coarse pitch thread with a Class 6g thread fit. The shoulder diameter is 8 mm with a tolerance of -0.025 to 0 mm, and the shoulder length is 12 mm with a tolerance of 0 to 0.05 mm, ensuring high dimensional accuracy. It is manufactured to metric system standards and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations.