S-90278A305 M5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and reducing long-term maintenance costs.
• High mechanical strength and durability from a Rockwell B55 hardness and 70,000 psi tensile strength, ensuring reliable performance under load.
• Precise component alignment and location enabled by the accurately machined 6mm shoulder diameter with tight tolerances for a secure fit.
• Secure and flush installation with a smooth, standard hex socket head, allowing for high torque application without protrusion.
• Reliable and standardized threading with a Class 6g fit M5x0.8 coarse pitch, ensuring consistent engagement and vibration resistance.
• Environmental and regulatory compliance meeting RoHS 3 and REACH standards, making it safe for various international markets and applications.
• Versatile 18mm shoulder length provides a stable bearing surface for rotating parts like gears and pulleys, enhancing assembly integrity.

Professional Applications & Engineering Value

This M5 shoulder screw is engineered to address critical challenges in precision assemblies, such as misalignment and component wear. The 18-8 Stainless Steel material offers excellent corrosion resistance, making it suitable for applications in machinery, automotive, and electronics exposed to moisture or chemicals. Its hex socket drive allows for compact, high-torque fastening in confined spaces, while the precise shoulder acts as a pivot or axle, maintaining exact positioning in rotating mechanisms. The Class 6g thread with a coarse pitch ensures quick assembly and robust performance, reducing the risk of loosening under dynamic loads. This combination of features delivers long-term reliability and efficiency in demanding industrial shoulder screw applications.

Specification Summary & Compliance

This precision shoulder screw features an M5x0.8 metric thread with a Class 6g fit for standard tolerance. The shoulder diameter is 6 mm with a tolerance of -0.025 to 0 mm, and the shoulder length is 18 mm with a tolerance of 0 to 0.05 mm, ensuring precise fit in assembly. Manufactured in accordance with common metric standards, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial and consumer products.