S-95198A540 8-32 x 5/8" ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior sealing performance with a silicone rubber O-ring that withstands pressures up to 1500 psi and temperatures from -80° to 400°F, ensuring leak-proof assemblies in demanding environments.
• Exceptional corrosion resistance thanks to 18-8 stainless steel construction, providing long-term durability and reliability in harsh industrial settings.
• Precise thread engagement with Class 3A thread fit, offering tighter tolerances for secure fastening and reduced risk of loosening under vibration.
• High tensile strength of 100,000 psi and Rockwell B85 hardness, delivering robust performance for heavy-duty applications without failure.
• Easy installation and removal with a standard hex socket drive (9/64"), allowing efficient assembly with common tools and minimizing downtime.
• Broad compliance with international standards including ASME B18.3, DIN 912, and ISO 4762, ensuring interoperability and quality in global engineering projects.
• Environmental and safety adherence through RoHS 3 and REACH compliance, supporting sustainable and safe manufacturing practices.

Professional Applications & Engineering Value

This socket head cap screw is engineered to address critical challenges in industrial sealing and fastening, where leaks or component failure can lead to costly downtime. The 18-8 stainless steel material offers excellent resistance to corrosion and oxidation, making it ideal for applications in chemical processing, marine environments, or outdoor equipment. The integrated silicone rubber O-ring provides a reliable seal against fluids and gases, capable of handling pressures up to 1500 psi and extreme temperatures from -80° to 400°F. With a Class 3A thread fit and UNC coarse threads, it ensures quick assembly and high clamping force in machinery, automotive systems, and hydraulic assemblies. The fully threaded design and right-hand thread direction facilitate uniform stress distribution, enhancing the screw's longevity in high-vibration settings like pumps and compressors.

Specification Summary & Compliance

This screw features precise dimensions, including a thread size of 8-32 UNC with Class 3A thread fit for accurate engagement, a length of 5/8 inch, and a head diameter of 0.27 inch. It conforms to ASME B18.3, DIN 912, and ISO 4762 standards, ensuring consistent quality and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting environmental and safety regulations for hazardous substances.