S-90042A255 M4 x 12 mm ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior sealing performance with integrated Buna-N rubber O-ring, effectively preventing leaks in high-pressure environments up to 1500 PSI.
• Excellent corrosion resistance provided by 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial conditions.
• High mechanical strength with 100,000 PSI tensile strength and Rockwell B85 hardness, offering dependable load-bearing capacity and durability.
• Precision threading with Class 6g fit and coarse M4 x 0.7mm pitch, enabling easy installation and secure fastening in various applications.
• Wide temperature tolerance from -40° to 225°F, maintaining sealing integrity and performance across diverse operating environments.
• Standardized socket head design with 3mm hex drive, allowing for efficient tool engagement and consistent torque application.
• Full thread coverage along the 12mm length, providing maximum grip and uniform clamping force in assembled components.

Professional Applications & Engineering Value

This M4 socket head cap screw is engineered to address critical sealing challenges in industrial applications where fluid containment and pressure resistance are paramount. The combination of 18-8 stainless steel and Buna-N rubber O-ring creates a robust sealing solution that prevents leakage in hydraulic systems, pneumatic equipment, and machinery subjected to high pressure up to 1500 PSI. The fully threaded design with Class 6g precision ensures reliable engagement in tapped holes, while the metric coarse thread (M4 x 0.7mm) facilitates quick assembly. The socket head configuration with 3mm hex drive allows for compact installation in space-constrained environments, making these sealing screws ideal for OEM manufacturing, automotive systems, and processing equipment requiring dependable fluid sealing performance.

Specification Summary & Compliance

This screw features M4 x 0.7mm coarse threading with Class 6g thread fit per metric standards, ensuring dimensional accuracy and interchangeability. Manufacturing complies with ASME B18.3, DIN 912, and ISO 4762 specifications for socket head cap screws. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting current substance restriction requirements for industrial use.