S-91273A388 M5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life.
• High mechanical strength and durability with a tensile strength of 70,000 psi and Rockwell B55 hardness to withstand demanding loads.
• Precise assembly and alignment ensured by the 14 mm shoulder with tight diameter tolerance for accurate component positioning.
• Secure, non-slip fastening thanks to the knurled socket head and 2.5 mm hex drive, providing excellent grip during installation.
• Reliable thread engagement with Class 5g6g metric coarse thread (M5x0.8), offering robust performance and vibration resistance.
• Compliance with environmental regulations, being RoHS 3 and REACH compliant, ensuring safety and sustainability in industrial use.
• Optimized for high-shear applications with a minimum shear strength of 35,000 psi, suitable for dynamic mechanical assemblies.

Professional Applications & Engineering Value

This M5 shoulder screw is engineered to address critical challenges in precision machinery and industrial equipment. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, making it ideal for applications in automotive, aerospace, and electronics where environmental factors are a concern. The knurled socket head and 2.5 mm hex drive ensure secure, tool-friendly installation, reducing the risk of stripping and improving maintenance efficiency. With a Class 5g6g thread fit and coarse pitch, it delivers reliable fastening in high-vibration settings, preventing loosening over time. The precisely machined shoulder (14 mm length) facilitates accurate alignment of moving parts, such as in bearings, pulleys, and linkages, minimizing wear and enhancing overall system longevity. This screw is a trusted solution for engineers seeking durability, compliance, and performance in demanding industrial applications.

Specification Summary & Compliance

This shoulder screw features a metric M5x0.8 coarse thread with Class 5g6g thread fit for precise tolerance. The shoulder diameter is 5 mm with a tolerance of -0.04 to -0.01 mm, and shoulder length is 14 mm with a tolerance of 0 to 0.25 mm, ensuring high dimensional accuracy. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial components.