S-96738A046 1/4"-28 x 5/8" ASME B18.3 Vibration-Resistant Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term reliability.
• Vibration-resistant locking provided by the nylon patch thread locker, preventing loosening under dynamic loads from -70° to 250°F.
• High-strength performance offering 100,000 psi tensile strength for demanding industrial applications.
• Precise thread engagement with Class 3A fit and UNF fine thread, ensuring secure fastening and reduced risk of stripping.
• Easy installation and removal using a standard 3/16" hex drive, compatible with common tools for efficient maintenance.
• Reliable sealing capability with Buna-N rubber O-ring, effective in temperatures from -40° to 225°F for fluid or pressure containment.
• Broad regulatory compliance meeting ASME B18.3, RoHS 3, and REACH standards for safe, quality-assured use.

Professional Applications & Engineering Value

This socket head cap screw is engineered to address critical challenges in industrial settings, such as vibration-induced loosening and corrosion. The 18-8 stainless steel material provides excellent durability against moisture and chemicals, while the nylon patch thread locker ensures stable fastening in high-vibration machinery, automotive assemblies, and precision equipment. With a fine UNF thread and Class 3A fit, it delivers tight sealing and high clamping force, making it ideal for applications requiring maximum pressure handling up to 1500 psi. Its fully threaded design and hex socket drive facilitate quick assembly in confined spaces, enhancing productivity in manufacturing and maintenance operations.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including a Class 3A thread fit and UNF fine thread specifications for accurate engagement. It complies with ASME B18.3 manufacturing norms and is certified under RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material integrity. The design supports a maximum hole diameter of 0.265" and operates effectively within specified temperature ranges for both the thread locker and O-ring components.