S-90263A279 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments like marine or chemical processing.
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B79 hardness for reliable, long-lasting performance in high-stress applications.
• Precise shoulder fit and alignment with a 10mm diameter shoulder and tight tolerances, ensuring accurate component positioning and reduced assembly wear.
• Secure and flush installation enabled by the smooth head and hex socket drive, providing a clean finish and high torque capability without stripping.
• Consistent and reliable threading with a Class 6g fit and M8x1.25 coarse pitch, facilitating quick assembly and strong holding power.
• Enhanced durability and surface protection from the passivated finish, which increases resistance to corrosion and extends service life.
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use in various industries.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address critical alignment and corrosion challenges in demanding industrial settings. The 316 stainless steel material provides excellent resistance to corrosive elements, making it suitable for applications in marine equipment, food processing machinery, and chemical plants where moisture and chemicals are prevalent. The precise shoulder with a diameter of 10mm and minimal tolerances ensures accurate positioning of components such as gears, pulleys, and bearings, reducing misalignment and wear. The hex socket drive allows for high-torque installation in confined spaces, while the passivated finish enhances surface durability. With a Class 6g thread fit and coarse pitch, it offers quick assembly and reliable performance in dynamic loads, making it a vital industrial fastener for machinery that requires steadfast reliability and minimal maintenance.

Specification Summary & Compliance

This shoulder screw features a metric M8x1.25 coarse thread with a Class 6g thread fit for standard precision. The shoulder diameter is 10mm with a tolerance of -0.025 to 0 mm, and the shoulder length is 10mm with a tolerance of 0 to 0.05 mm, ensuring precise fit in assemblies. Manufactured from 316 stainless steel with a passivated finish, it complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.