S-90269A791 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Enhanced durability and strength offering a tensile strength of 70,000 psi and shear strength of 35,000 psi for reliable, heavy-duty fastening.
• Precise alignment and smooth rotation thanks to the 50mm shoulder with tight diameter tolerance, reducing wear in assemblies.
• Secure, non-slip installation with a knurled socket head and 6mm hex drive, ensuring firm tool grip during tightening.
• Accurate and consistent threading with Class 5g6g metric coarse thread fit, providing reliable engagement and vibration resistance.
• Long-lasting surface protection from the black oxide finish, which adds an extra layer against corrosion and abrasion.
• Compliance with global standards including RoHS 3 and REACH, ensuring safety and environmental responsibility in your projects.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address common industrial challenges such as misalignment, corrosion, and mechanical failure. The 316 stainless steel material provides exceptional resistance to chemicals and moisture, making it suitable for marine, chemical processing, and food industry applications where corrosion resistance is critical. The 50mm shoulder length and precise diameter tolerance enable exact positioning in machinery, reducing stress on components and extending equipment life. Combined with a black oxide finish and Class 5g6g thread fit, this fastener ensures reliable performance in high-vibration environments, from automotive assemblies to precision instruments. Its knurled head and hex drive design facilitate easy installation, minimizing downtime in production lines.

Specification Summary & Compliance

This shoulder screw features an M8x1.25mm coarse thread with a Class 5g6g thread fit for precise metric threading. The shoulder diameter is 12 mm with a tolerance of -0.072 to -0.01 mm, and the shoulder length is 50 mm with a tolerance of 0 to 0.25 mm, ensuring high dimensional accuracy. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.