S-90825A144 4-40 x 3/8" Sealing Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior sealing performance with integrated Buna-N rubber O-ring, reliably containing fluids and gases up to 6000 psi in demanding environments
• Excellent corrosion resistance provided by 18-8 stainless steel construction with passivated finish, ensuring long-term reliability in harsh conditions
• High tensile strength of 70,000 psi delivers exceptional mechanical integrity and load-bearing capacity for critical applications
• Broad temperature compatibility from -40° to 225°F, maintaining seal integrity and mechanical properties across extreme thermal ranges
• Precision threading with UNC coarse thread and Class 2A fit ensures smooth installation and secure fastening in various materials
• Enhanced drive engagement through Phillips No. 1 drive style combined with rounded pan head design for efficient installation and removal
• Regulatory compliance with RoHS 3 and REACH standards, making them suitable for regulated industrial and commercial applications

Professional Applications & Engineering Value

These 4-40 UNC rounded head Phillips screws with integrated Buna-N rubber O-rings provide critical sealing solutions for industrial equipment requiring reliable fluid and gas containment. The 18-8 stainless steel construction with passivated finish offers superior corrosion resistance in challenging environments, while the coarse UNC threading ensures quick installation and secure fastening in various substrates. Engineered to withstand pressures up to 6000 psi and temperatures from -40° to 225°F, these sealing screws are ideal for hydraulic systems, pneumatic equipment, fluid handling assemblies, and industrial machinery where leak prevention is paramount. The combination of 70,000 psi tensile strength and fully threaded design provides maximum engagement and clamping force for demanding applications.

Specification Summary & Compliance

These screws feature precision 4-40 UNC coarse threads with Class 2A fit for consistent installation performance and reliable engagement. The manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and material safety. The Buna-N rubber O-ring provides effective sealing capabilities while maintaining flexibility across the specified temperature range. The 18-8 stainless steel material with passivated finish enhances corrosion resistance, making these screws suitable for various industrial environments requiring durable, high-performance fastening solutions.