S-90278A403 M5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Precise component alignment ensured by the 6mm shoulder diameter with tight tolerance (-0.025 to 0 mm), reducing assembly errors and improving machinery performance.
• High-strength durability with Rockwell B55 hardness and 70,000 psi tensile strength, providing reliable performance under mechanical stress and vibration.
• Secure, tamper-resistant fastening using a 3 mm hex socket drive, allowing for high torque application and reducing tool slippage in confined spaces.
• Consistent thread engagement with Class 6g metric coarse thread (M5x0.8mm), ensuring easy assembly and reliable hold in various materials.
• Environmental and safety compliance with RoHS 3 and REACH standards, making it suitable for global markets and eco-conscious manufacturing.
• Versatile shoulder design with 14mm length, providing stable bearing surfaces for rotating parts like gears, pulleys, and linkages.

Professional Applications & Engineering Value

This M5 shoulder screw is engineered to address critical alignment and durability challenges in industrial applications. The 18-8 stainless steel material offers excellent resistance to rust and chemicals, extending service life in humid or corrosive settings such as food processing, marine, and automotive assemblies. The hex socket head with 3mm drive enables efficient installation in tight spaces, while the Class 6g thread with coarse pitch ensures quick, secure fastening without cross-threading. The precisely machined shoulder (6mm diameter, 14mm length) acts as a reliable pivot or spacer, minimizing wear in moving components like bearings and rollers. This design reduces maintenance downtime and enhances operational reliability, making it a cost-effective solution for precision engineering projects requiring high tensile strength and dimensional accuracy.

Specification Summary & Compliance

This shoulder screw adheres to metric system standards with M5x0.8mm coarse thread pitch and Class 6g thread fit for consistent performance. Shoulder dimensions include a diameter tolerance of -0.025 to 0 mm and length tolerance of 0 to 0.05 mm, ensuring precise assembly. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets international environmental and safety requirements for industrial use.