S-90278A304 M5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and extended service life.
• High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness, ensuring reliable load-bearing capacity and resistance to deformation.
• Precise alignment and smooth rotation due to the accurately machined 6mm shoulder diameter with a tight tolerance of -0.025 to 0 mm.
• Secure and flush installation enabled by the smooth head texture and standard hex socket drive, preventing tool slippage and providing a clean finish.
• Quick and easy assembly with coarse M5x0.8mm thread spacing, reducing installation time in high-volume production settings.
• Consistent quality and interchangeability guaranteed by Class 6g thread fit and adherence to metric standards, minimizing assembly errors.
• Compliance with environmental regulations, being RoHS 3 and REACH compliant, making it suitable for global supply chains and sensitive applications.

Professional Applications & Engineering Value

This M5 shoulder screw is engineered to address common challenges in precision assembly, such as misalignment and component wear. The 18-8 stainless steel material offers excellent durability and resistance to rust, making it ideal for machinery, automotive, and electronics where exposure to moisture or chemicals is a concern. Its hex socket drive allows for high-torque application in confined spaces, while the precise shoulder diameter ensures accurate positioning of moving parts like gears and pulleys, reducing vibration and extending equipment lifespan. The coarse thread facilitates faster installation in industrial production lines, enhancing efficiency without compromising on the 70,000 psi tensile strength that withstands dynamic loads. This combination of features provides reliable performance in demanding applications, from conveyor systems to robotic arms.

Specification Summary & Compliance

This shoulder screw features a metric M5x0.8mm thread with Class 6g fit for standard interchangeability. The shoulder diameter tolerance is -0.025 to 0 mm, and shoulder length tolerance is 0 to 0.05 mm, ensuring precise engineering fits. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial use without hazardous substances.