S-95198A399 1/2"-13 x 7/8" ASME B18.3, DIN 912, ISO 4762 Sealing Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments.
• High-strength performance delivering 100,000 psi tensile strength and Rockwell B85 hardness for reliable load-bearing applications.
• Effective sealing capability with integrated Buna-N rubber O-ring, resisting pressures up to 1500 psi and temperatures from -40°F to 225°F.
• Precise thread engagement through Class 3A fit and UNC coarse threads, ensuring secure fastening and vibration resistance.
• Efficient torque transmission via 3/8" hex drive and standard socket head, reducing tool slippage and installation time.
• Full-threaded design for consistent clamping force along the entire 7/8" length, enhancing joint integrity.
• Broad compliance with ASME B18.3, DIN 912, and ISO 4762 standards, guaranteeing interchangeability and quality assurance.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this socket head cap screw combines 18-8 stainless steel with a Class 3A UNC thread to address common challenges like corrosion, high vibration, and pressure leaks. The Buna-N rubber O-ring provides a reliable seal in hydraulic systems, pneumatic equipment, and machinery enclosures, preventing fluid or gas escape under pressures up to 1500 psi. Its coarse thread and fully threaded rod ensure quick assembly and uniform stress distribution, reducing the risk of loosening in dynamic applications. Ideal for high-pressure fastening in automotive, aerospace, and manufacturing, it offers durability and compliance with global standards like ASME B18.3, making it a trusted choice for engineers seeking longevity and performance.

Specification Summary & Compliance

This screw adheres to Class 3A thread fit for precise dimensional accuracy, with 1/2"-13 UNC coarse threads and a right-hand thread direction. It meets ASME B18.3, DIN 912, and ISO 4762 specifications for consistency and reliability. Additionally, it is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring environmental safety and regulatory adherence in industrial use.