S-90825A216 1/4"-20 x 1" Sealing Stainless Steel Pan Head Phillips Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance: Integrated Buna-N rubber O-ring provides reliable sealing up to 6000 psi, preventing leaks in high-pressure industrial systems.
• Excellent Corrosion Resistance: Made from 18-8 stainless steel with a passivated finish for enhanced durability in harsh, corrosive environments.
• High Tensile Strength: Withstands up to 70,000 psi tensile stress, ensuring secure fastening in demanding mechanical applications.
• Broad Temperature Compatibility: O-ring functions effectively from -40°F to 225°F, suitable for varied thermal conditions without degradation.
• Precision Thread Fit: Class 2A UNC coarse threads ensure easy installation and reliable engagement, reducing assembly time and risk of cross-threading.
• User-Friendly Drive Design: Phillips No. 3 drive allows for efficient torque application with standard tools, improving installation speed.
• Regulatory Compliance: Meets RoHS 3 and REACH standards, ensuring safety and environmental responsibility for global industrial use.

Professional Applications & Engineering Value

This 1/4"-20 UNC rounded head Phillips screw is engineered to address critical sealing challenges in industrial fastening applications. Constructed from 18-8 stainless steel, it offers exceptional resistance to rust and oxidation, making it ideal for machinery, fluid systems, and outdoor equipment exposed to moisture. The Buna-N rubber O-ring creates a tight seal against high-pressure fluids and gases, preventing leaks in hydraulic systems, pumps, and pressurized containers. Its fully threaded design and Class 2A thread fit provide consistent clamping force, while the passivated finish enhances surface durability. Suitable for holes up to 0.265" diameter, this sealing fastener ensures long-term reliability in automotive, manufacturing, and plumbing sectors, reducing maintenance costs and downtime.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC coarse thread with Class 2A fit for precise dimensional accuracy and easy assembly. It is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances. The fully threaded design and right-hand thread direction adhere to standard industrial practices, providing consistent performance in high-pressure sealing applications up to 6000 psi.