S-90042A262 M4 x 45 mm ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Reliable Sealing Performance: Integrated Buna-N rubber O-ring provides excellent sealing against fluids and gases up to 1500 psi, ideal for pressurized applications.
• Superior Corrosion Resistance: Made from 18-8 stainless steel, offering excellent durability in harsh environments and resistance to rust and oxidation.
• High Tensile Strength & Durability: With 100,000 psi tensile strength and Rockwell B85 hardness, ensures long-term reliability under heavy loads and vibration.
• Precision Thread Fit: Class 6g thread tolerance ensures smooth installation and secure fastening, reducing the risk of cross-threading or loosening.
• Wide Temperature Compatibility: O-ring functions effectively from -40° to 225° F, making it suitable for diverse industrial temperature conditions.
• Optimized Partially Threaded Design: Allows for precise clamping force distribution and easier alignment in assemblies.
• Standard Socket Drive: Hex drive (3 mm) enables high torque application with standard tools, minimizing stripping and improving installation efficiency.

Professional Applications & Engineering Value

This M4 socket head cap screw is engineered to address critical sealing and fastening challenges in industrial settings. The combination of 18-8 stainless steel and a Buna-N rubber O-ring ensures a reliable seal against leaks in high-pressure systems up to 1500 psi, such as hydraulic components, pneumatic equipment, and fluid handling systems. The partially threaded metric design with coarse thread pitch (0.7mm) facilitates quick assembly and provides strong holding power, while the Class 6g thread fit guarantees precision and reduces assembly errors. Ideal for machinery, automotive, and aerospace applications, this screw delivers consistent performance where vibration resistance, corrosion protection, and sealing integrity are paramount.

Specification Summary & Compliance

This screw features a metric thread size M4 x 0.7mm with Class 6g thread tolerance and a partially threaded rod design (24 mm min thread length, 45 mm overall length). It complies with ASME B18.3, DIN 912, and ISO 4762 standards, ensuring dimensional accuracy and interoperability. Additionally, it is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, meeting environmental and safety regulations for industrial use.