S-90042A431 M3 x 4 mm ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior sealing performance with Viton® fluoroelastomer O-rings that maintain integrity from -20° to 400° F, ideal for extreme temperature environments.
• Exceptional corrosion resistance thanks to 18-8 stainless steel construction, ensuring long-term durability in harsh industrial settings.
• High tensile strength of 100,000 psi and Rockwell B85 hardness for reliable load-bearing and resistance to deformation under stress.
• Precise Class 6g thread fit and metric coarse threading for easy installation and secure fastening in various applications.
• Effective pressure sealing up to 1500 psi, preventing leaks in high-pressure systems and enhancing operational safety.
• Standard hex socket drive (2.5 mm) allows for straightforward tool engagement and torque application, reducing assembly time.
• Full threading ensures consistent grip along the entire 4 mm length, providing uniform clamping force.

Professional Applications & Engineering Value

This M3 socket head cap screw is engineered to address critical sealing and durability challenges in demanding sectors like automotive, aerospace, and fluid handling systems. The combination of 18-8 stainless steel and a Viton® fluoroelastomer O-ring offers robust resistance to chemicals, temperature fluctuations, and moisture, preventing failures in high-pressure environments up to 1500 psi. Its metric coarse thread and Class 6g thread fit ensure precise alignment and ease of use in tight spaces, while the fully threaded design maximizes contact for secure assemblies. Ideal for machinery, enclosures, and hydraulic components, this screw reduces maintenance needs and enhances system reliability by withstanding rigorous operational conditions.

Specification Summary & Compliance

This screw features a metric M3 x 0.5 mm coarse thread with a Class 6g thread fit for dimensional accuracy, and it is fully threaded with a length of 4 mm. It complies with ASME B18.3, DIN 912, and ISO 4762 standards, ensuring consistent manufacturing quality. Additionally, it is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for industrial use.