S-90042A437 M3 x 16 mm ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance: Integrated Viton® fluoroelastomer O-ring ensures reliable sealing against fluids and gases, even under maximum pressures up to 1500 psi, reducing the risk of leaks in critical assemblies.
• Exceptional Temperature & Chemical Resistance: Withstands extreme temperatures from -20° to 400° F and offers excellent resistance to oils, fuels, and chemicals, ensuring long-term reliability in harsh environments.
• High Tensile Strength & Durability: Made from 18-8 Stainless Steel with a tensile strength of 100,000 psi and Rockwell B85 hardness, providing robust mechanical performance and resistance to deformation under load.
• Precision Thread Fit for Secure Fastening: Class 6g thread fit and M3 x 0.5 mm coarse thread design enable easy installation and consistent clamping force, minimizing loosening in vibrating applications.
• Corrosion-Resistant Construction: 18-8 Stainless Steel material offers excellent corrosion resistance, making these screws ideal for use in humid, chemical, or outdoor settings without compromising integrity.
• Compact & Efficient Socket Head Design: Standard socket head with a 2.5 mm hex drive allows for low-profile installation and high torque application in confined spaces, enhancing assembly efficiency.
• Compliance with International Standards: Meets ASME B18.3, DIN 912, and ISO 4762 specifications, ensuring interchangeability and reliability in global engineering projects.

Professional Applications & Engineering Value

This M3 socket head cap screw is engineered to address critical challenges in industrial sealing and fastening applications. The combination of 18-8 Stainless Steel and a Viton® fluoroelastomer O-ring provides a durable, leak-proof seal that performs reliably in high-pressure systems, such as hydraulic assemblies, pneumatic controls, and fluid handling equipment. The fully threaded design with a Class 6g thread fit ensures precise engagement and uniform stress distribution, reducing the risk of thread stripping in metric coarse thread applications. Ideal for industries like automotive, aerospace, and manufacturing, this fastener offers superior corrosion resistance and maintains integrity in temperatures ranging from -20° to 400° F, making it a trusted solution for demanding environments where failure is not an option.

Specification Summary & Compliance

This screw features precise M3 x 0.5 mm metric coarse threads with a Class 6g thread fit, ensuring dimensional accuracy per ISO 4762 and DIN 912 standards. Manufactured in compliance with ASME B18.3, it guarantees consistent performance and interchangeability. Additionally, the product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for hazardous substances.