S-95198A123 2-56 x 1" 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 reliably withstands pressures up to 1500 psi and extreme temperatures from -80° to 400°F, preventing leaks in critical applications.
• Exceptional corrosion resistance provided by 18-8 Stainless Steel, ensuring long-term durability and reliability in harsh industrial environments.
• High-strength construction with a tensile strength of 100,000 psi and Rockwell B85 hardness, offering robust fastening for demanding mechanical assemblies.
• Precise thread engagement due to the Class 3A fit and 2-56 UNC coarse threads, enabling easy installation and secure, vibration-resistant connections.
• Versatile hex drive compatibility with a 5/64" drive size, allowing for efficient tightening in confined spaces using standard tools.
• Global compliance assurance by meeting ASME B18.3, DIN 912, and ISO 4762 standards, along with RoHS 3 and REACH regulations, for safe and reliable international use.
• Optimized partial threading design that combines threaded and unthreaded sections for balanced grip and ease of adjustment in various mounting scenarios.

Professional Applications & Engineering Value

This Socket Head Cap Screw is engineered to address common industrial challenges such as fluid leakage, vibration loosening, and environmental degradation. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it ideal for applications in chemical processing, marine equipment, and outdoor machinery. The integrated silicone rubber O-ring ensures a tight seal against liquids and gases, crucial in hydraulic systems, pneumatic controls, and automotive assemblies where pressure integrity is paramount. With its 2-56 UNC coarse threads and Class 3A fit, it offers quick assembly and high clamping force, reducing downtime in production lines. The partially threaded rod design allows for precise positioning, while the hex socket drive facilitates secure installation in hard-to-reach areas, enhancing overall efficiency in industrial fastening solutions.

Specification Summary & Compliance

This screw features a 2-56 UNC thread with Class 3A fit for precise dimensional accuracy and reliable performance. It complies with ASME B18.3, DIN 912, and ISO 4762 manufacturing standards, ensuring consistent quality and interchangeability. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for hazardous substances.