S-90042A149 M2.5 x 4 mm ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance: Integrated silicone rubber O-ring provides reliable leak-proof sealing in demanding applications, rated for temperatures from -80° to 400° F.
• Exceptional Strength & Durability: 18-8 stainless steel construction delivers 100,000 psi tensile strength and Rockwell B85 hardness for long-lasting performance in high-stress environments.
• Precision Thread Fit: Class 6g thread tolerance ensures consistent, reliable engagement with mating components, reducing assembly issues and improving joint integrity.
• High-Pressure Capability: Withstands up to 1500 psi maximum pressure, making these screws ideal for hydraulic, pneumatic, and other pressurized systems.
• Corrosion Resistance: 18-8 stainless steel material provides excellent resistance to rust and corrosion in various industrial environments.
• Secure Hex Drive Engagement: 2mm hex socket drive offers positive torque transmission and prevents stripping during installation.
• Industry Standard Compliance: Manufactured to ASME B18.3, DIN 912, and ISO 4762 specifications for guaranteed interchangeability and performance.

Professional Applications & Engineering Value

These M2.5 socket head cap screws with integrated silicone rubber O-rings solve critical sealing challenges in precision engineering applications. The 18-8 stainless steel construction combined with Class 6g thread fit ensures reliable performance in environments where vibration resistance and pressure integrity are paramount. The coarse thread pitch (0.45mm) facilitates faster assembly while maintaining strong holding power, particularly valuable in automated production lines. These metric socket screws are engineered for applications requiring both mechanical fastening and fluid sealing, such as hydraulic systems, pneumatic controls, pump housings, and precision instrumentation. The fully threaded design allows for maximum adjustability and consistent clamping force distribution across the entire engagement length.

Specification Summary & Compliance

This M2.5 x 0.45mm x 4mm metric socket head cap screw features Class 6g thread tolerance with coarse thread spacing, manufactured to ASME B18.3, DIN 912, and ISO 4762 standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. The dimensional accuracy meets international metric standards with precise head diameter (4.5mm) and length (4mm) specifications for consistent performance in standardized applications.