S-90042A164 M3 x 25 mm ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior sealing performance with integrated silicone rubber O-rings, preventing leaks in high-pressure environments up to 1500 psi.
• Exceptional corrosion resistance due to 18-8 stainless steel construction, ensuring long-term durability in harsh industrial conditions.
• High tensile strength of 100,000 psi and Rockwell B85 hardness for reliable load-bearing and resistance to deformation under stress.
• Wide temperature tolerance from -80° to 400° F, making it suitable for applications exposed to extreme thermal variations.
• Precision Class 6g thread fit and coarse M3 x 0.5mm metric thread for easy installation and secure fastening in various materials.
• Compatibility with standard 2.5mm hex drivers for quick assembly and disassembly, reducing downtime in maintenance operations.
• Partially threaded design allowing for controlled clamping force and reduced risk of cross-threading in sensitive assemblies.

Professional Applications & Engineering Value

This M3 socket head cap screw is engineered to address critical sealing and mechanical fastening challenges in demanding industrial settings. The combination of 18-8 stainless steel and a silicone rubber O-ring provides a robust solution for applications where fluid or gas containment is essential, such as in hydraulic systems, pneumatic equipment, and automotive components. The metric coarse thread and Class 6g thread fit ensure precise engagement and vibration resistance, minimizing the risk of loosening in dynamic environments. Its partially threaded configuration allows for optimal grip on materials without compromising structural integrity, making it ideal for machinery, enclosures, and assemblies requiring reliable sealing performance under high pressure and temperature fluctuations.

Specification Summary & Compliance

This screw features a Class 6g thread fit with M3 x 0.5mm coarse metric threading, adhering to ISO 4762, DIN 912, and ASME B18.3 standards for dimensional accuracy and interchangeability. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material sustainability in industrial use.