S-90042A260 M4 x 35 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, preventing leaks in high-pressure environments up to 1500 psi.
• Excellent corrosion resistance from 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial conditions.
• High tensile strength of 100,000 psi and Rockwell B85 hardness for dependable load-bearing in demanding applications.
• Precise Class 6g thread fit with coarse 0.7mm pitch, enabling quick assembly and secure fastening without cross-threading.
• Wide temperature tolerance from -40° to 225°F, maintaining seal integrity and mechanical properties in extreme thermal cycles.
• Compact hex socket drive design with 3mm key size, allowing easy installation in confined spaces with standard tools.
• Partially threaded shank providing optimal grip length for materials up to 4.546mm thickness, reducing installation stress.

Professional Applications & Engineering Value

This M4 socket head cap screw delivers critical sealing solutions for industrial equipment exposed to fluids, gases, and pressure variations. The 18-8 stainless steel body combined with the Buna-N rubber O-ring creates a reliable barrier against leaks in hydraulic systems, pneumatic controls, and processing machinery. Engineered with metric coarse threading and Class 6g tolerance, it ensures consistent engagement in aluminum housings and steel frames while resisting vibration loosening. The partially threaded design concentrates clamping force precisely where needed, preventing joint failure in high-vibration environments like automotive assemblies and heavy machinery. With its hex socket drive, maintenance teams can achieve proper torque values in space-constrained panels and enclosures, reducing assembly time and improving serviceability.

Specification Summary & Compliance

This socket head cap screw features M4 x 0.7mm metric coarse threads with Class 6g thread fit per ISO standards, ensuring dimensional accuracy for industrial applications. Manufactured to ASME B18.3, DIN 912, and ISO 4762 specifications for consistent quality and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing safe use in regulated industries without hazardous substances.