S-90825A322 2-56 x 3/16" Sealing Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior sealing performance with fluoroelastomer O-rings that withstand pressures up to 6000 psi and temperatures from -20° to 400°F, ensuring reliable leak prevention in demanding environments.
• Excellent corrosion resistance due to 18-8 stainless steel construction and passivated finish, providing long-term durability and reduced maintenance in harsh conditions.
• Precise thread engagement with Class 2A fit and UNC coarse threading, ensuring easy installation and secure fastening in industrial applications.
• Enhanced drive stability with Phillips No. 1 drive style and rounded pan head design, offering improved torque control and reduced cam-out during assembly.
• Full threading along the 3/16" length for maximum grip and uniform stress distribution, ideal for high-vibration or high-pressure sealing tasks.
• Compliance with environmental standards including RoHS 3 and REACH, making these screws safe for use in regulated industries and global markets.
• Versatile application range from machinery to fluid systems, thanks to the combination of high tensile strength (70,000 psi) and reliable O-ring sealing.

Professional Applications & Engineering Value

These 2-56 UNC rounded head Phillips screws are engineered to address critical sealing challenges in industrial settings where pressure integrity and corrosion resistance are paramount. The 18-8 stainless steel material, enhanced by a passivated finish, provides robust protection against rust and chemical exposure, extending service life in humid or corrosive environments. The integrated fluoroelastomer rubber O-ring ensures a tight seal against fluids and gases, capable of handling up to 6000 psi, which is essential for hydraulic systems, pneumatic controls, and high-pressure equipment. The coarse UNC threads with Class 2A fit facilitate quick and secure installation, reducing assembly time while maintaining precision. Ideal for applications in automotive, aerospace, and manufacturing, these screws deliver reliable performance where failure is not an option, combining ease of use with engineering-grade durability.

Specification Summary & Compliance

This fastener adheres to UNC thread standards with a Class 2A fit for consistent dimensional accuracy and easy assembly. It is fully threaded and designed for a maximum hole diameter of 0.095". The product complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for international industrial use. Manufactured to meet high-performance requirements, it supports applications demanding precise threading and reliable sealing under varying pressure and temperature conditions.