S-90278A430 M8 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments.
• Precise component alignment ensured by the 50mm shoulder with tight length tolerance (0 to 0.05 mm) and smooth finish.
• High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness for reliable load-bearing applications.
• Secure and flush installation using the hex socket head design, allowing for high torque application in confined spaces.
• Accurate and durable thread engagement with Class 6g fit and coarse M8x1.25mm thread for easy assembly and vibration resistance.
• Consistent dimensional stability from the precisely controlled shoulder diameter (10 mm with -0.025 to 0 mm tolerance).
• Compliance with environmental regulations, being RoHS 3 and REACH compliant for safe and sustainable use.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address critical alignment and durability challenges in industrial machinery, automation systems, and precision equipment. The 18-8 stainless steel material provides excellent resistance to corrosion and oxidation, extending service life in demanding conditions. The 50mm shoulder length with precise tolerances ensures accurate positioning of moving parts, reducing wear and preventing misalignment. The hex socket head allows for easy installation in tight spaces, while the Class 6g thread fit and coarse M8x1.25mm thread offer reliable fastening that withstands vibrations and dynamic loads. Ideal for use in assembly jigs, rotating shafts, and bearing mounts, this precision shoulder screw enhances operational reliability and reduces maintenance needs.

Specification Summary & Compliance

This shoulder screw features a metric thread with Class 6g fit for standard industrial compatibility. The shoulder diameter is controlled to -0.025 to 0 mm tolerance, and the shoulder length has a 0 to 0.05 mm tolerance, ensuring high precision. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for global supply chains.