S-90269A784 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 a tensile strength of 70,000 psi and a minimum shear strength of 35,000 psi for reliable load-bearing performance.
• Precise alignment and smooth rotation enabled by the 40mm shoulder with a tight diameter tolerance for reduced wear in assemblies.
• Secure, tamper-resistant installation using the 6mm hex socket drive, providing high torque transmission in confined spaces.
• Enhanced grip and handling from the knurled head texture, facilitating manual adjustments during assembly.
• Consistent thread engagement with a Class 5g6g thread fit and coarse M8 x 1.25mm pitch for quick, reliable fastening.
• Durable, wear-resistant surface thanks to the black oxide finish, which also reduces light reflection in sensitive applications.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address common industrial challenges such as misalignment, corrosion, and mechanical failure in dynamic assemblies. The 316 stainless steel material offers superior resistance to corrosive agents, making it suitable for marine, chemical processing, and food industry equipment. The 40mm shoulder length provides a precise pivot or spacer, reducing friction and wear in rotating parts like bearings, pulleys, and linkages. Combined with the hex socket drive and black oxide finish, it ensures easy installation and long-term reliability in high-stress environments, from automation systems to precision machinery.

Specification Summary & Compliance

This shoulder screw adheres to metric system standards with an M8 x 1.25mm coarse thread and Class 5g6g thread fit for dimensional accuracy. The shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring consistent performance. It is manufactured to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial use.