S-90042A225 M2.5 x 16 mm ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior sealing performance with integrated Buna-N rubber O-ring, rated for pressures up to 1500 psi and temperatures from -40° to 225° F, ensuring reliable leak prevention in demanding environments.
• Exceptional corrosion resistance due to 18-8 stainless steel construction, providing long-term durability and reduced maintenance in harsh or humid conditions.
• High tensile strength of 100,000 psi and Rockwell B85 hardness for secure, vibration-resistant fastening that withstands heavy loads without failure.
• Precision hex socket drive (2 mm) allows for easy installation with standard tools, minimizing slippage and ensuring consistent torque application.
• Accurate Class 6g thread fit with coarse M2.5x0.45 mm threading for quick assembly and reliable engagement in various materials.
• Full compliance with international standards including ASME B18.3, DIN 912, and ISO 4762, guaranteeing interchangeability and quality assurance.
• Environmentally safe design meeting RoHS 3 and REACH regulations, making it suitable for global supply chains and sensitive applications.

Professional Applications & Engineering Value

This M2.5 socket head cap screw is engineered to address critical sealing and durability challenges in industrial settings. The 18-8 stainless steel material offers excellent resistance to corrosion and oxidation, ideal for applications in machinery, automotive assemblies, and outdoor equipment where exposure to moisture or chemicals is common. The integrated Buna-N rubber O-ring provides a reliable seal against fluids and gases, preventing leaks in high-pressure systems up to 1500 psi. With a fully threaded design and coarse metric thread, it ensures fast installation and strong holding power in components like hydraulic fittings, enclosures, and precision instruments. The hex socket drive enables secure tightening in confined spaces, reducing the risk of tool damage and improving assembly efficiency. By combining robust materials with precise thread specifications, this screw delivers long-term performance in demanding environments, from manufacturing plants to electronic devices.

Specification Summary & Compliance

This screw features a metric M2.5x0.45 mm coarse thread with a Class 6g tolerance for precise fit, and dimensions including a 16 mm length, 4.5 mm head diameter, and 2.5 mm head height. It is manufactured in accordance with ASME B18.3, DIN 912, and ISO 4762 standards, ensuring dimensional accuracy and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for industrial use.