S-90269A798 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 316 stainless steel construction, ideal for harsh environments and chemical exposure.
• High mechanical strength and durability with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable performance under heavy loads.
• Precise alignment and smooth rotation provided by the 12mm shoulder diameter with tight tolerance, reducing wear on mating parts.
• Secure, high-torque installation enabled by the 6mm hex socket drive and knurled head for superior grip and slip resistance.
• Consistent and reliable thread engagement due to the Class 5g6g thread fit and M8x1.25 coarse pitch for quick assembly.
• Enhanced surface protection and reduced light reflection with the black oxide finish, offering improved wear resistance.
• Compliance with major environmental regulations including RoHS 3 and REACH, ensuring safe and sustainable use in industrial applications.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address critical challenges in precision assembly and motion control systems. The 316 stainless steel material provides superior resistance to corrosion and oxidation, making it ideal for marine, chemical processing, and food industry applications where moisture and aggressive agents are present. The black oxide finish not only enhances corrosion protection but also minimizes galling and seizing in high-friction environments. With its hex socket drive and knurled head, it allows for high-torque installation without slippage, ensuring secure fastening in automated machinery, robotics, and conveyor systems. The precisely machined shoulder acts as a bearing surface or pivot point, maintaining accurate alignment and reducing wear on components, which extends equipment lifespan and reduces maintenance downtime in demanding industrial settings.

Specification Summary & Compliance

This shoulder screw features an M8x1.25 metric thread with a Class 5g6g thread fit for precise tolerance and reliable engagement. The shoulder diameter is manufactured to a tight tolerance of -0.072 to -0.01 mm, and the shoulder length tolerance is 0 to 0.25 mm, ensuring consistent performance in precision assemblies. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and regulated industrial applications.