S-90042A243 M3 x 45 mm ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• High-pressure sealing capability up to 1500 psi, thanks to the integrated Buna-N rubber O-ring that prevents leaks.
• Exceptional mechanical strength with 100,000 psi tensile strength and Rockwell B85 hardness for demanding applications.
• Precise thread engagement with Class 6g fit and coarse M3 x 0.5 mm threads, ensuring easy assembly and secure fastening.
• Versatile partial threading design allows for both clamping and alignment functions in various assemblies.
• Wide temperature tolerance from -40° to 225° F, maintaining seal integrity and performance across diverse operating conditions.
• Reliable hex drive compatibility with 2.5 mm drive size, providing high torque transmission and reduced stripping risk.

Professional Applications & Engineering Value

This M3 socket head cap screw is engineered to address critical sealing and fastening challenges in industrial settings. The 18-8 stainless steel material offers excellent resistance to corrosion and oxidation, making it suitable for outdoor, marine, or chemical-exposed applications. The integrated Buna-N rubber O-ring ensures a reliable seal against fluids and gases, preventing leaks in pressurized systems up to 1500 psi. With its partially threaded design and Class 6g thread fit, it provides optimal grip and alignment in machinery, automotive components, and electronic enclosures, reducing vibration loosening and enhancing assembly efficiency. The coarse metric thread and hex drive facilitate quick installation and high torque application, minimizing downtime in production lines.

Specification Summary & Compliance

This screw features a Class 6g thread fit per ISO standards, ensuring dimensional accuracy and interchangeability. It complies with ASME B18.3, DIN 912, and ISO 4762 specifications for socket head cap screws, guaranteeing consistent quality and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for use in various industries.