S-90042A123 M5 x 20 mm ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Reliable Sealing Performance: Integrated silicone rubber O-ring provides a secure seal against dust, moisture, and fluids, rated for up to 1500 psi maximum pressure.
• Exceptional Corrosion Resistance: Made from 18-8 stainless steel, offering excellent durability and resistance to rust in harsh industrial environments.
• High Tensile Strength & Durability: With a tensile strength of 100,000 psi and Rockwell B85 hardness, ensuring long-lasting performance under heavy loads.
• Wide Temperature Tolerance: O-ring functions effectively in temperatures from -80° to 400° F, suitable for extreme thermal conditions.
• Precision Thread Fit: Class 6g thread fit and coarse pitch (0.8 mm) enable easy installation and secure fastening in metric applications.
• Easy Installation with Hex Drive: Standard 4 mm hex socket drive allows for straightforward tightening using common tools, reducing assembly time.
• Full Thread Engagement: Fully threaded design ensures consistent clamping force along the entire 20 mm length, ideal for varied material thicknesses.

Professional Applications & Engineering Value

This M5 socket head cap screw with a sealing O-ring is engineered to address critical challenges in industrial settings where leakage and environmental exposure are concerns. The combination of 18-8 stainless steel and a silicone rubber O-ring provides robust protection against high-pressure fluids and temperature fluctuations, making it ideal for applications in hydraulic systems, automotive assemblies, and machinery enclosures. The fully threaded metric design with a coarse 0.8 mm pitch ensures quick, reliable fastening, while the hex socket drive simplifies maintenance in confined spaces. By preventing leaks and resisting corrosion, this screw enhances equipment longevity and reduces downtime in demanding operations.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, including Class 6g thread fit for metric applications and compliance with ASME B18.3, DIN 912, and ISO 4762 specifications. It is fully RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring environmental safety and regulatory adherence for global industrial use.