S-90278A443 M2 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh environments
• Precise alignment and positioning enabled by the 20mm shoulder with tight diameter and length tolerances
• High-strength reliability with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
• Secure, low-profile installation using the 1.5mm hex socket drive that prevents stripping and allows flush mounting
• Consistent thread engagement with Class 6g metric coarse threads ensuring reliable fastening in industrial assemblies
• Environmental compliance assurance meeting RoHS 3 and REACH standards for safe, regulated use
• Optimal torque transmission through the smooth socket head design, reducing installation effort and improving efficiency

Professional Applications & Engineering Value

This precision shoulder screw is engineered to solve critical alignment challenges in industrial fastening applications. The 18-8 stainless steel material provides excellent corrosion resistance, ideal for machinery exposed to moisture or chemicals. The 20mm shoulder length with precise tolerances acts as a pivot, bearing surface, or spacer, eliminating misalignment in assemblies like motors, robotics, and precision instruments. The hex socket drive allows compact installation in confined spaces, while the M2x0.4mm coarse thread ensures quick, secure engagement. This combination delivers reliable performance in demanding applications where vibration resistance and dimensional accuracy are paramount.

Specification Summary & Compliance

This M2 shoulder screw features a Class 6g thread fit per metric standards, with shoulder diameter tolerance of -0.025 to 0 mm and shoulder length tolerance of 0 to 0.05 mm for high precision. Manufacturing adheres to industry specifications for metric coarse threads and hex socket drive profiles. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance in global markets.