S-95198A375 3/8"-16 x 1" 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 applications up to 1500 psi
• Excellent corrosion resistance provided by 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
• Precise thread engagement with Class 3A fit for secure fastening and vibration resistance in critical assemblies
• High strength durability with 100,000 psi tensile strength and Rockwell B85 hardness for demanding industrial applications
• Wide temperature compatibility with O-ring performance maintained from -40°F to 225°F for versatile operating conditions
• Easy installation and removal with standard 5/16" hex drive socket head design requiring minimal clearance
• Full thread coverage along the 1" length for maximum grip and load distribution in assembled components

Professional Applications & Engineering Value

This 3/8"-16 UNC socket head cap screw delivers exceptional engineering value through its integrated Buna-N rubber O-ring sealing system, specifically designed to address fluid and gas containment challenges in pressurized systems. The 18-8 stainless steel construction provides inherent corrosion resistance while maintaining 100,000 psi tensile strength, making it ideal for machinery, hydraulic systems, and processing equipment where both sealing integrity and structural reliability are critical. The Class 3A thread fit ensures precise engagement with mating components, reducing the risk of loosening under vibration while the coarse UNC thread facilitates quick assembly in production environments. Engineered to withstand pressures up to 1500 psi across a broad temperature range from -40° to 225° F, this fastener solves the dual challenges of mechanical fastening and environmental sealing in demanding industrial applications.

Specification Summary & Compliance

This socket head cap screw features precision 3/8"-16 UNC coarse threads with Class 3A fit for superior thread engagement and meets dimensional specifications per ASME B18.3, DIN 912, and ISO 4762 standards. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. With a maximum hole diameter of 0.397" and fully threaded 1" length, this screw provides consistent performance in applications requiring reliable sealing and high-strength fastening solutions.