S-90269A777 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life.
• Precise component alignment and smooth rotation thanks to the 30mm shoulder with a controlled diameter tolerance.
• High-strength fastening with a tensile strength of 70,000 psi and a minimum shear strength of 35,000 psi for reliable performance in demanding applications.
• Secure, tamper-resistant drive provided by the 6mm hex socket, ensuring tight installation and removal with standard tools.
• Enhanced grip and handling from the knurled head texture, facilitating manual adjustments in assembly.
• Accurate and reliable threading with a Class 5g6g fit on the M8x1.25 coarse thread, ensuring consistent engagement and vibration resistance.
• Compliance with environmental regulations, being RoHS 3 and REACH compliant for safe use in various industries.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address critical challenges in precision machinery and industrial assemblies. The 316 stainless steel material offers exceptional resistance to corrosion and chemicals, making it suitable for applications in marine, chemical processing, and food equipment where durability is paramount. The black oxide finish not only enhances corrosion protection but also reduces light reflection, which is beneficial in optical and sensitive electronic devices. The 30mm shoulder provides a precise locating diameter for components like bearings, gears, and pulleys, eliminating the need for additional bushings and reducing assembly time and cost. With its hex socket drive and coarse thread, it ensures easy installation and high clamping force, preventing loosening under dynamic loads and vibration in automotive, aerospace, and automation systems.

Specification Summary & Compliance

This shoulder screw features an M8x1.25 metric thread with a Class 5g6g fit for precise tolerance, a shoulder diameter of 12 mm with a tolerance of -0.072 to -0.01 mm, and a shoulder length of 30 mm with a tolerance of 0 to 0.25 mm. Manufactured to standard specifications, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.