S-95198A551 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 Viton® fluoroelastomer O-rings, providing reliable leak prevention in high-pressure applications up to 1500 psi.
• Exceptional corrosion resistance from 18-8 stainless steel construction, ensuring long-term durability in harsh industrial environments.
• High-strength mechanical properties with 100,000 psi tensile strength and Rockwell B85 hardness for reliable load-bearing in demanding assemblies.
• Precision thread engagement with Class 3A fit for secure fastening and vibration resistance in critical machinery components.
• Wide temperature tolerance from -20° to 400° F, maintaining seal integrity across diverse operating conditions.
• Standardized socket head design with 5/16" hex drive for easy installation and consistent torque application using common tools.
• Full thread coverage along the 1" length for maximum grip and uniform stress distribution in assembled joints.

Professional Applications & Engineering Value

These Viton® sealing socket head cap screws deliver critical leak-proof performance in high-pressure industrial systems where fluid containment is paramount. The 18-8 stainless steel body provides excellent corrosion resistance for chemical processing, marine, and outdoor equipment, while the Class 3A UNC coarse threads ensure rapid assembly and secure fastening in vibration-prone applications. Engineered with fully threaded shafts and standard hex drive sockets, these screws maintain consistent clamping force in hydraulic systems, pump housings, and compressor assemblies where 1500 psi pressure ratings and temperature extremes would compromise ordinary fasteners. The integrated O-ring seal eliminates the need for additional gasketing, reducing assembly time and potential failure points in precision engineering applications.

Specification Summary & Compliance

Manufactured to ASME B18.3, DIN 912, and ISO 4762 standards with Class 3A thread fit for precision dimensional accuracy. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features 3/8"-16 UNC coarse threads, 1" fully threaded length, and 5/16" hex drive configuration for standardized installation across industrial applications.