S-90318A411 M2 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and passivated finish, ensuring long-term reliability in harsh industrial environments.
• Precise alignment and reduced assembly stress thanks to the 3mm shoulder diameter with tight tolerances (-0.03 to 0 mm), ideal for accurate component positioning.
• High-strength performance offering 95,000 psi tensile strength and Rockwell B97 hardness for demanding applications without failure.
• Space-saving ultra-low profile socket head with 1.5mm hex drive, enabling easy installation in confined spaces while maintaining a smooth, low-profile appearance.
• Reliable thread engagement with Class 6g thread fit and coarse 0.4mm pitch, ensuring secure fastening and vibration resistance in metric assemblies.
• Environmental and regulatory compliance with RoHS 3 and REACH standards, making it safe for use in various industries without hazardous substances.
• Consistent dimensional accuracy across thread length (4mm) and shoulder length (2.5mm with 0 to 0.06 mm tolerance), reducing rework and improving assembly efficiency.

Professional Applications & Engineering Value

This M2 shoulder screw is engineered to address common industrial challenges such as misalignment, corrosion, and space constraints. Made from 18-8 stainless steel with a passivated finish, it resists rust and chemical exposure, extending service life in machinery, electronics, and automotive systems. The ultra-low profile socket head and precise 3mm shoulder diameter allow for exact component positioning, minimizing wear and simplifying maintenance. With a Class 6g thread fit and coarse 0.4mm pitch, it ensures quick, secure fastening in metric assemblies, reducing installation time and enhancing reliability in high-vibration environments. Ideal for applications requiring tight tolerances and robust performance, this screw delivers consistent value in precision engineering projects.

Specification Summary & Compliance

This shoulder screw adheres to metric thread standards with a Class 6g thread fit for precise dimensional accuracy. Key specifications include a shoulder diameter tolerance of -0.03 to 0 mm and shoulder length tolerance of 0 to 0.06 mm, ensuring reliable performance. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial use without restricted substances.