S-90278A414 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh industrial environments.
• Precise component alignment ensured by the smooth, precisely toleranced shoulder (10mm diameter, -0.025 to 0 mm tolerance) for reliable assembly.
• High-strength durability with 70,000 PSI tensile strength and Rockwell B55 hardness to withstand demanding mechanical loads.
• Secure, tamper-resistant fastening via the 5mm hex socket drive, providing a clean finish and high torque capability.
• Accurate and reliable thread engagement with Class 6g fit and M8x1.25mm coarse thread for quick assembly and vibration resistance.
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries.
• Optimized for industrial machinery with a 12mm thread length and standard socket head profile for easy integration into various applications.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address critical alignment and durability challenges in industrial applications. The 18-8 stainless steel material offers excellent resistance to corrosion and oxidation, making it ideal for environments exposed to moisture or chemicals. The precise shoulder fit (10mm diameter with tight tolerance) ensures accurate positioning of components such as gears, pulleys, and bearings, reducing wear and misalignment. The Class 6g thread fit and coarse thread pitch (1.25mm) provide reliable fastening that resists loosening under vibration, common in machinery and automation systems. With a 5mm hex drive, installation is secure and efficient, minimizing tool slip and damage. These features collectively enhance equipment longevity and reduce maintenance needs in sectors like automotive assembly, conveyor systems, and precision instruments.

Specification Summary & Compliance

This shoulder screw features a metric M8x1.25mm coarse thread with Class 6g thread fit for standard industrial use. The shoulder diameter is 10mm with a tolerance of -0.025 to 0 mm, and shoulder length is 10mm with a tolerance of 0 to 0.05 mm, ensuring precise assembly. Manufactured from 18-8 stainless steel, it meets a tensile strength of 70,000 PSI and Rockwell B55 hardness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable industrial applications.