S-90269A771 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life.
• High mechanical strength offering 70,000 psi tensile strength and 35,000 psi shear strength for reliable performance under load.
• Precise component alignment enabled by the 25mm shoulder with controlled diameter and length tolerances.
• Secure and non-slip fastening with a knurled head texture and 6mm hex drive for superior torque application.
• Durable, wear-resistant surface provided by the black oxide finish, enhancing appearance and offering mild corrosion protection.
• Wide industry compatibility ensured by the M8x1.25 coarse metric thread with Class 5g6g fit for standard assemblies.
• Compliance with global regulations, being RoHS 3 and REACH compliant for safe use in various markets.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to solve critical alignment and pivot point challenges in industrial applications. The 316 stainless steel material provides superior resistance to chemicals and saltwater corrosion, making it suitable for marine, chemical processing, and food machinery. The precision-machined 25mm shoulder acts as a reliable spacer or axle, ensuring exact positioning of moving parts like gears, linkages, and pulleys, which reduces wear and prevents binding. The black oxide finish adds an extra layer of protection against galling and minor corrosion. Combined with a coarse M8x1.25 thread and high tensile strength, this screw delivers robust, long-lasting performance in dynamic or high-stress assemblies, minimizing maintenance and downtime.

Specification Summary & Compliance

This shoulder screw conforms to metric (M8x1.25) coarse threading standards with a Class 5g6g thread fit for consistent engagement. The shoulder features a diameter of 12 mm with a tolerance of -0.072 to -0.01 mm and a length of 25 mm with a 0 to 0.25 mm tolerance, ensuring precise assembly. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, affirming its suitability for regulated industrial and commercial use.