S-98070A073 2-56 x 3/16" Sealing Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior sealing performance with a silicone rubber O-ring that maintains integrity across extreme temperatures from -150° to 500° F, preventing leaks in demanding environments.
• Exceptional corrosion resistance thanks to 18-8 Stainless Steel construction and passivated finish, ensuring long-term reliability in harsh or humid conditions.
• High-pressure capability withstands up to 20000 psi, providing secure fastening and sealing in high-stress industrial applications.
• Precise thread engagement with Class 2A thread fit and UNC coarse threading for easy installation and consistent, reliable assembly.
• Optimized drive efficiency featuring a Phillips No. 1 drive and standard flat head profile for flush mounting and straightforward tool engagement.
• Robust mechanical strength offering 70000 psi tensile strength and Rockwell B70 hardness, ensuring durability under load and vibration.
• Regulatory compliance assurance meeting RoHS 3 and REACH standards, making it suitable for global industrial and electronic applications.

Professional Applications & Engineering Value

This 2-56 UNC Flat Head Phillips screw is engineered to address critical sealing and corrosion challenges in industrial assemblies. The 18-8 Stainless Steel material, combined with a passivated finish, provides excellent resistance to oxidation and chemical exposure, extending service life in machinery, automotive, and marine environments. The integrated silicone rubber O-ring ensures a reliable seal against moisture, dust, and gases, even under thermal cycling from -150° to 500° F. With a Class 2A thread fit and coarse UNC threading, it facilitates quick installation and reduces cross-threading risks, while the flat head design allows for flush surface mounting in confined spaces. Ideal for high-pressure systems, electronic enclosures, and fluid handling equipment, this screw delivers consistent performance where leak-proof integrity and regulatory compliance are paramount.

Specification Summary & Compliance

This screw adheres to UNC thread standards with a Class 2A thread fit for precise dimensional accuracy. It is fully threaded and features a standard 82° countersink angle. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of restricted substances and suitable for international industrial use.