S-90278A728 M2.5 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
• Precise alignment and reduced wear due to the accurately machined 3.5mm shoulder diameter with tight tolerances
• High mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
• Consistent thread engagement with Class 6g thread fit and coarse 0.45mm pitch for quick assembly and vibration resistance
• Secure and efficient installation using a standard hex socket head with 2mm drive, minimizing tool slippage
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe use in industrial settings
• Versatile metric sizing with 4mm thread length and 8mm shoulder length for compatibility in various assemblies

Professional Applications & Engineering Value

This M2.5 shoulder screw is engineered to address common challenges in precision machinery, such as misalignment and component wear. The 18-8 stainless steel material provides excellent corrosion resistance, making it ideal for environments exposed to moisture or chemicals. Its precise shoulder diameter and tight tolerances ensure accurate positioning in assemblies, reducing stress and extending the lifespan of connected parts. The Class 6g thread fit and coarse pitch facilitate quick, reliable fastening in automated or manual processes, while the socket head design with a hex drive allows for compact installation in confined spaces. Commonly used in robotics, electronics, and automotive systems, this screw enhances performance and durability in industrial applications.

Specification Summary & Compliance

The screw features a Class 6g thread fit per metric standards, with a shoulder diameter tolerance of -0.025 to 0 mm and shoulder length tolerance of 0 to 0.05 mm for high precision. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety. Manufactured to meet industrial requirements for metric coarse threads and consistent performance.