S-90825A125 2-56 x 1/4" Sealing Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior sealing performance with Buna-N rubber O-ring that withstands up to 6000 psi pressure, preventing leaks in demanding industrial environments
• Excellent corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ensuring long-term reliability in harsh conditions
• Wide temperature compatibility from -40° to 225°F, maintaining seal integrity across diverse operating environments
• Secure fastening with precise thread control through UNC coarse threading and Class 2A fit, providing consistent engagement and vibration resistance
• Easy installation and removal with Phillips No. 1 drive and rounded pan head design, reducing assembly time and tool slippage
• Full thread coverage along the 1/4" length for maximum grip strength and uniform load distribution
• Environmental compliance assurance with RoHS 3 and REACH regulations, meeting international standards for hazardous substance restrictions

Professional Applications & Engineering Value

This 2-56 UNC rounded head Phillips screw delivers critical sealing solutions where pressure integrity and chemical resistance are paramount. The combination of 18-8 stainless steel material and passivated finish provides exceptional protection against corrosion in chemical processing, marine, and outdoor applications. The integrated Buna-N rubber O-ring creates a reliable seal that maintains performance under extreme pressure fluctuations and temperature variations from -40° to 225°F. Engineered with UNC coarse threading and Class 2A thread fit, this fully threaded fastener ensures precise engagement in tapped holes while resisting vibration-induced loosening. These characteristics make it ideal for high-pressure sealing applications in hydraulic systems, pneumatic controls, fluid handling equipment, and industrial machinery where leak prevention is critical to operational safety and efficiency.

Specification Summary & Compliance

This sealing screw features precise 2-56 UNC coarse threading with Class 2A thread fit for consistent engagement and dimensional accuracy. The fully threaded 1/4" length provides complete fastening coverage. Manufacturing and material compliance includes full adherence to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and restricted substance compliance for global industrial applications.