S-90042A294 M8 x 50 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 industrial environments and extended service life.
• Reliable high-pressure sealing up to 1500 psi, thanks to the integrated Buna-N rubber O-ring that prevents leaks in fluid and gas systems.
• Exceptional mechanical strength with 100,000 psi tensile strength and Rockwell B85 hardness, ensuring secure fastening under high stress and vibration.
• Wide temperature tolerance from -40° to 225°F, allowing consistent performance in diverse operating conditions.
• Precise and secure installation with a 6mm hex socket drive, providing high torque transmission and reducing the risk of tool slippage.
• Accurate thread engagement with Class 6g fit and M8x1.25mm coarse thread, enabling quick assembly and reliable connections.
• Versatile partial threading design for applications requiring both clamping force and unthreaded shaft guidance.

Professional Applications & Engineering Value

This M8 socket head cap screw is engineered to address critical challenges in machinery, automotive, and hydraulic systems where leak prevention and structural integrity are paramount. The 18-8 stainless steel material offers excellent resistance to oxidation and chemical exposure, while the Buna-N rubber O-ring provides a dependable seal against fluids and gases up to 1500 psi. The coarse metric thread (M8x1.25mm) ensures rapid installation and robust holding power, reducing assembly time in high-volume production. With a partially threaded shank and hex socket drive, it delivers precise alignment and high clamp load, making it ideal for precision equipment, pumps, and pressurized enclosures that demand durability and compliance with international standards.

Specification Summary & Compliance

This screw features a Class 6g thread fit per ISO metric standards, ensuring dimensional accuracy and interchangeability. It conforms to ASME B18.3, DIN 912, and ISO 4762 specifications for socket head cap screws, guaranteeing consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and safe for industrial use across global markets.