S-90042A457 M4 x 16 mm ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior Sealing Reliability: Integrated Viton® O-ring provides exceptional leak-proof performance in high-pressure environments up to 1500 psi.
• Extreme Temperature Resistance: Maintains sealing integrity across a wide operating range from -20° to 400° F, ideal for fluctuating industrial conditions.
• Enhanced Corrosion Resistance: 18-8 Stainless Steel construction with Rockwell B85 hardness ensures long-term durability in harsh, corrosive environments.
• High Tensile Strength: 100,000 psi tensile strength delivers reliable fastening under significant mechanical stress and vibration.
• Precision Thread Fit: Class 6g thread tolerance with coarse M4 x 0.7 mm pitch ensures easy installation and secure engagement in various materials.
• Standardized Socket Drive: Hex 3 mm drive allows for high torque application with standard tools, reducing installation time and tool wear.
• Global Compliance Assurance: Meets ASME B18.3, DIN 912, and ISO 4762 standards, with RoHS 3 and REACH compliance for international supply chain integration.

Professional Applications & Engineering Value

This M4 socket head cap screw is engineered to address critical sealing challenges in demanding industrial applications where fluid containment and pressure integrity are paramount. The 18-8 stainless steel material provides excellent corrosion resistance, making it suitable for chemical processing, marine, and food-grade equipment. The integrated Viton® fluoroelastomer O-ring ensures reliable sealing against oils, fuels, and chemicals, even under extreme thermal cycling from -20° to 400° F. The fully threaded design with coarse metric thread (M4 x 0.7 mm) facilitates quick assembly and disassembly in maintenance-heavy environments, while the hex socket drive enables high-torque installation without slippage. Ideal for hydraulic systems, pneumatic components, and high-pressure vessels, this screw eliminates leakage risks and reduces downtime in critical operations.

Specification Summary & Compliance

This socket head cap screw features precise Class 6g thread fit per ISO metric standards, with a diameter of M4, pitch of 0.7 mm, and length of 16 mm. It conforms to ASME B18.3, DIN 912, and ISO 4762 manufacturing specifications, ensuring dimensional accuracy and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing the absence of restricted hazardous substances for safe use in global markets.