S-90825A329 2-56 x 1/2" Sealing Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior sealing performance with fluoroelastomer O-rings that withstand extreme pressures up to 6000 psi and temperatures from -20° to 400°F, ensuring reliable leak prevention in demanding environments.
• Excellent corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, providing long-term durability in harsh industrial settings.
• Precise thread engagement with Class 2A UNC coarse threads and full threading, enabling secure fastening and consistent performance in high-vibration applications.
• Easy installation and removal with Phillips No. 1 drive and rounded pan head design, reducing assembly time and tool slippage risks.
• Broad compatibility with standard 0.095" maximum hole diameters and right-hand threading, making them ideal for retrofit and new designs in machinery and equipment.
• Regulatory compliance assurance with RoHS 3 and REACH standards, meeting environmental and safety requirements for global industrial supply chains.
• High tensile strength of 70,000 psi, offering reliable load-bearing capacity for critical sealing and fastening tasks 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, corrosion-induced failures, and assembly inefficiencies. The 18-8 stainless steel material, combined with a passivated finish, ensures exceptional resistance to rust and chemical exposure, making them suitable for high-pressure sealing applications in hydraulic systems, automotive components, and processing equipment. The integrated fluoroelastomer O-ring maintains integrity across a wide temperature range (-20° to 400°F), preventing leaks in dynamic or static seals. With a Class 2A thread fit and coarse UNC threading, these screws provide reliable engagement in industrial fastening scenarios, reducing the risk of loosening under vibration and enhancing overall system longevity. Their design supports quick installation with a Phillips drive, streamlining maintenance and production workflows while meeting stringent pressure rating demands up to 6000 psi.

Specification Summary & Compliance

This screw features precise Class 2A thread fit per UNC standards, ensuring dimensional accuracy and interchangeability. It adheres to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming the absence of restricted substances for safe industrial use. The fully threaded design with coarse spacing and right-hand direction supports efficient fastening, while the specified maximum hole diameter of 0.095" guarantees proper fit in engineered assemblies.