S-90825A613 4-40 x 1/4" Sealing Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior sealing performance with silicone rubber O-ring that withstands extreme pressures up to 6000 psi
• Exceptional temperature resistance from -80° to 400°F for reliable operation in harsh environments
• Enhanced corrosion resistance through 18-8 stainless steel construction with passivated finish
• Secure fastening with precise threading featuring UNC coarse threads and Class 2A fit for consistent engagement
• Optimized drive efficiency with Phillips No. 1 drive style preventing cam-out during installation
• Maximum material compatibility with rounded pan head design distributing clamp force evenly
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications

Professional Applications & Engineering Value

This 4-40 UNC rounded head Phillips screw delivers critical sealing solutions for demanding industrial applications where fluid containment and pressure integrity are paramount. The 18-8 stainless steel construction combined with passivated finish provides exceptional corrosion resistance in chemical processing, marine, and food equipment environments. The integrated silicone rubber O-ring technology creates reliable seals in hydraulic systems, pneumatic controls, and fluid handling equipment, preventing leaks under maximum pressure of 6000 psi. The fully threaded design with Class 2A thread fit ensures consistent sealing performance across mating surfaces, while the coarse UNC threading facilitates quick assembly in production environments. Engineered for applications requiring both mechanical fastening and environmental sealing, this screw eliminates the need for separate gaskets or sealants in enclosure systems, pump assemblies, and pressure vessel applications.

Specification Summary & Compliance

This sealing screw features 4-40 UNC coarse threads with Class 2A thread fit ensuring precise dimensional accuracy and reliable engagement. The fully threaded design provides consistent sealing capability along the entire 1/4" length. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental compliance for industrial applications. The silicone rubber O-ring maintains sealing integrity across the specified temperature range of -80° to 400°F while withstanding pressures up to 6000 psi.