S-90825A325 2-56 x 1/4" Sealing Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior sealing performance with fluoroelastomer rubber O-rings that withstand pressures up to 6000 psi and temperatures from -20° to 400°F, preventing leaks in critical applications.
• Excellent corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ensuring long-term durability in harsh environments.
• Reliable thread engagement with Class 2A UNC coarse threads and full threading, providing secure fastening and vibration resistance.
• Easy installation and removal with Phillips No. 1 drive and rounded pan head design, reducing assembly time and tool slippage.
• Broad industrial compatibility due to compliance with RoHS 3 and REACH regulations, making them safe for various sectors.
• Consistent dimensional accuracy with standardized head diameter (0.18") and length (1/4"), ensuring fit for maximum hole diameter of 0.095".
• High tensile strength of 70,000 psi, offering robust performance under mechanical stress without failure.

Professional Applications & Engineering Value

These 2-56 UNC rounded head Phillips screws are engineered to address common industrial challenges such as fluid leakage and corrosion in high-pressure systems. Made from 18-8 stainless steel with a passivated finish, they resist oxidation and chemical exposure, extending service life in demanding environments like hydraulic assemblies, automotive components, and machinery. The inclusion of a fluoroelastomer rubber O-ring ensures an effective seal against oils, fuels, and extreme temperatures, preventing downtime and maintenance costs. With a coarse thread and Class 2A fit, they provide quick, secure installation in industrial sealing applications, enhancing reliability and safety in operations where pressure integrity is critical.

Specification Summary & Compliance

This screw features precise Class 2A thread fit per UNC standards, with a thread size of 2-56 and coarse spacing for optimal engagement. Dimensions include a head diameter of 0.18", length of 1/4", and full threading to ensure consistent performance. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its suitability for industrial use without hazardous substances. The manufacturing adheres to standard tolerances for reliable fastening in applications requiring up to 6000 psi pressure resistance.