S-91273A389 M5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and washdown applications.
• Precise component alignment ensured by the 16mm shoulder with tight diameter tolerance (-0.04 to -0.01 mm), reducing assembly time and improving product quality.
• High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness, providing reliable performance under load and vibration.
• Secure, non-slip fastening thanks to the knurled head texture and 2.5 mm hex socket drive, allowing for high torque application without tool slippage.
• Wide compatibility with Class 5g6g thread fit and M5x0.8 coarse pitch, facilitating quick assembly and interchangeability in metric-based designs.
• Environmental regulation compliance with RoHS 3 and REACH standards, ensuring safe use in regulated markets and eco-conscious manufacturing.
• Durable, long-lasting performance due to the material's inherent properties and precise manufacturing, reducing maintenance and replacement frequency.

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 corrosion resistance, making it suitable for applications in machinery, automation, and outdoor equipment where exposure to moisture or chemicals is a concern. The 16mm shoulder length with controlled tolerances acts as a precise pivot or spacer, ensuring accurate positioning of parts like gears, pulleys, and linkages without additional bushings. Combined with the hex socket drive and knurled head, it allows for secure installation in tight spaces, enhancing assembly efficiency and reducing the risk of damage during maintenance. Ideal for high-strength and corrosion-resistant needs, this screw delivers reliable performance in demanding industrial settings.

Specification Summary & Compliance

This metric shoulder screw features precise dimensions including a 9.5mm thread length and 16mm shoulder length with a tolerance of 0 to 0.25 mm. The thread adheres to Class 5g6g fit under ISO metric standards, ensuring consistent engagement and reliability. Manufactured from 18-8 stainless steel with a tensile strength of 70,000 psi and minimum shear strength of 35,000 psi, it meets rigorous mechanical requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, supporting sustainable and safe industrial practices.