S-90269A656 M6 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and chemical exposure.
• Enhanced durability and wear resistance from the black oxide finish, providing added protection against rust and galling.
• Precise alignment and smooth rotation enabled by the 90mm shoulder with controlled tolerances, reducing assembly time and improving component fit.
• High mechanical strength with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable performance under heavy loads and vibration.
• Secure and efficient installation using the 4mm hex socket drive and knurled head, preventing cam-out and allowing for high torque application.
• Accurate and consistent threading with Class 5g6g fit and coarse M6x1mm pitch, facilitating quick assembly and reducing cross-threading risks.
• Full regulatory compliance with ISO 7379, RoHS 3, and REACH, ensuring safety and environmental standards are met for global supply chains.

Professional Applications & Engineering Value

This M6 shoulder screw is engineered to address critical challenges in precision assembly and motion control systems. The 316 stainless steel material offers exceptional resistance to corrosion and high temperatures, making it suitable for industrial machinery, automotive components, and marine equipment. The black oxide finish not only enhances aesthetics but also minimizes friction and wear in dynamic applications. With a 90mm shoulder length and tight diameter tolerance, it provides stable bearing surfaces for rotating parts like gears and pulleys, eliminating the need for additional bushings. The coarse thread pitch and Class 5g6g thread fit ensure quick, secure fastening, reducing installation errors and maintenance downtime in high-volume production environments.

Specification Summary & Compliance

This shoulder screw adheres to ISO 7379 standards, with precise dimensional controls including a shoulder diameter tolerance of -0.072 to -0.01 mm and shoulder length tolerance of 0 to 0.25 mm. The metric thread follows Class 5g6g fit for consistent engagement. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring no hazardous substances are used. Manufactured to meet 70,000 psi tensile strength and Rockwell B79 hardness, it guarantees reliability in demanding mechanical applications.