S-90042A288 M8 x 20 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 for reliable leak prevention in demanding applications
• Exceptional corrosion resistance through 18-8 stainless steel construction, ensuring long-term durability in harsh environments
• High-pressure capability withstands up to 1500 psi, making it ideal for hydraulic and pneumatic systems
• Wide temperature tolerance from -40° to 225°F maintains performance across extreme operating conditions
• Precision thread engagement with Class 6g fit guarantees consistent fastening and vibration resistance
• Enhanced drive stability through 6mm hex socket design prevents cam-out and provides secure torque transmission
• Maximum material strength with 100,000 psi tensile strength and Rockwell B85 hardness for heavy-duty applications

Professional Applications & Engineering Value

These M8 socket head cap screws with integrated Buna-N O-rings provide critical sealing solutions for industrial equipment where fluid containment is paramount. The 18-8 stainless steel construction offers excellent corrosion resistance in chemical processing, marine, and food-grade applications, while the coarse thread pitch (1.25mm) ensures rapid installation and superior holding power in vibration-prone environments. The fully threaded design distributes clamping force evenly, preventing joint failure in high-pressure systems up to 1500 psi. Engineered with Class 6g thread fit, these fasteners maintain precise tolerances in CNC machinery, automotive assemblies, and hydraulic components where leak-proof performance is non-negotiable.

Specification Summary & Compliance

This metric socket head cap screw features M8 x 1.25mm coarse threading with Class 6g thread fit per ISO standards, ensuring precise dimensional accuracy. Manufactured to meet ASME B18.3, DIN 912, and ISO 4762 specifications for consistent quality and interchangeability. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental safety and material traceability. The fastener delivers reliable performance with 20mm length, 13mm head diameter, and 6mm hex drive size for standardized tool compatibility across industrial applications.