S-90042A231 M3 x 4 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, ensuring long-term durability in harsh environments.
• Reliable high-pressure sealing up to 1500 psi, thanks to the integrated Buna-N rubber O-ring that prevents leaks in critical applications.
• Wide temperature compatibility from -40° to 225° F, maintaining seal integrity and performance across diverse operating conditions.
• High tensile strength of 100,000 psi and Rockwell B85 hardness, providing robust fastening that resists stripping and deformation under load.
• Precision Class 6g coarse threads for easy installation and secure fit, reducing assembly time and improving joint reliability.
• Hex socket drive design with 2.5 mm drive size, allowing for high torque application and access in confined spaces without slippage.
• Compliance with international standards including ASME B18.3, DIN 912, and ISO 4762, ensuring interchangeability and quality assurance.

Professional Applications & Engineering Value

This M3 socket head cap screw is engineered to address common industrial challenges such as fluid leakage and vibration loosening in high-pressure systems. The 18-8 stainless steel material offers excellent resistance to rust and chemicals, making it ideal for automotive, hydraulic, and pneumatic assemblies. Combined with the Buna-N rubber O-ring, it creates a dependable seal that withstands temperatures from -40° to 225° F, ensuring performance in extreme conditions. The fully threaded design and Class 6g coarse thread facilitate quick, secure fastening, reducing the risk of cross-threading and enhancing assembly efficiency. These features make it a top choice for engineers seeking reliable sealing screws that meet rigorous industrial fastener standards.

Specification Summary & Compliance

The screw features a metric M3 x 0.5 mm coarse thread with Class 6g tolerance for precise fit and ease of use. It adheres to manufacturing specifications under ASME B18.3, DIN 912, and ISO 4762, ensuring dimensional accuracy and reliability. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally conscious and safe industrial practices.