S-90825A152 4-40 x 7/8" Sealing Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior sealing performance with integrated Buna-N rubber O-ring to prevent leaks in demanding applications
• Exceptional pressure resistance capable of withstanding up to 6000 psi for reliable operation in high-pressure systems
• Wide temperature compatibility from -40° to 225°F for stable performance across diverse industrial environments
• Enhanced corrosion resistance through 18-8 stainless steel construction with passivated finish for extended service life
• Precise thread engagement with Class 2A UNC coarse threads ensuring secure fastening and vibration resistance
• Optimized drive efficiency with Phillips No. 1 drive for reliable installation and removal in confined spaces
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications

Professional Applications & Engineering Value

This 4-40 UNC rounded head Phillips sealing screw delivers critical engineering value in applications where fluid containment and pressure integrity are paramount. The combination of 18-8 stainless steel with passivated finish provides exceptional corrosion resistance in harsh environments, while the integrated Buna-N rubber O-ring creates a reliable seal that maintains integrity across extreme temperature fluctuations from -40° to 225°F. The fully threaded design with Class 2A UNC coarse threads ensures maximum engagement strength and vibration resistance, making it ideal for hydraulic systems, pneumatic equipment, and industrial machinery where pressure sealing up to 6000 psi is required. The pan head profile with Phillips drive offers both aesthetic appeal and practical installation advantages in space-constrained assemblies.

Specification Summary & Compliance

This 4-40 UNC screw features precise Class 2A thread fit with right-hand coarse threading and full thread engagement along the 7/8" length. Manufactured to industry standards with maximum hole diameter of 0.127" for optimal performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for industrial applications worldwide.