S-98070A112 2-56 x 3/16" Sealing Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior sealing performance with silicone rubber O-ring that withstands extreme temperatures from -80° to 400° F and pressures up to 1500 psi
• Exceptional corrosion resistance through 18-8 stainless steel construction and passivated surface treatment for long-term reliability in harsh environments
• Precision thread engagement with Class 2A UNC coarse threads ensuring secure fastening and vibration resistance in industrial applications
• Optimized flush mounting featuring undercut flat head design with 100° countersink angle for seamless surface integration
• Reliable drive performance with Phillips No. 1 drive style providing consistent torque transmission and reduced cam-out risk
• Environmental compliance assurance meeting RoHS 3 and REACH regulations for safe use across regulated industries
• High tensile strength rated at 70,000 psi for demanding mechanical applications requiring robust fastening solutions

Professional Applications & Engineering Value

This 2-56 UNC flat head sealing screw delivers critical engineering solutions for applications requiring both secure fastening and environmental sealing. The combination of 18-8 stainless steel construction and passivated finish provides exceptional corrosion resistance in challenging industrial environments, while the integrated silicone rubber O-ring maintains reliable sealing integrity across extreme temperature ranges from -80° to 400° F. The undercut flat head profile ensures proper countersinking and flush surface mounting, making it ideal for precision assemblies in electronics enclosures, fluid handling systems, and machinery where 1500 psi pressure rating and contamination prevention are paramount. The Class 2A thread fit with coarse thread spacing guarantees consistent engagement in various materials, reducing installation time while maintaining vibration resistance in demanding operational conditions.

Specification Summary & Compliance

This flat head screw features precision 2-56 UNC threads with Class 2A thread fit tolerance for reliable mechanical engagement. The manufacturing complies with industry standards for dimensional accuracy, including the specified 3/16" length, 0.172" head diameter, and 100° countersink angle. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide. The fully threaded design and right-hand thread direction provide standardized installation compatibility across various assembly requirements.