S-98070A610 1/4"-20 x 1 1/2" Sealing Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance: Integrated silicone rubber O-ring creates a reliable seal against fluids and gases, preventing leaks in demanding applications.
• Exceptional Corrosion Resistance: Constructed from 18-8 Stainless Steel with a passivated finish for enhanced durability in harsh environments.
• High-Pressure Capability: Withstands internal pressures up to 6000 psi, ensuring integrity in high-stress systems.
• Wide Temperature Tolerance: The silicone O-ring maintains its sealing properties across an extreme range from -80° to 400° F.
• Precision Thread Fit: Class 2A UNC coarse threads provide easy assembly and a secure, reliable fit.
• Optimized Head Design: The undercut flat head with a 100° countersink angle allows for a flush, low-profile installation.
• Regulatory Compliance: Meets RoHS 3 and REACH standards, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This Flat Head Phillips Sealing Screw is engineered to solve critical challenges in industrial sealing applications where fluid or gas containment is paramount. The combination of 18-8 Stainless Steel and a passivated finish provides excellent resistance to corrosion, extending service life in moist or chemically aggressive environments. The silicone rubber O-ring is the key to its performance, offering a resilient seal that remains effective from sub-zero to high-temperature conditions, making it ideal for HVAC systems, fluid power components, and processing equipment. The UNC coarse thread and Class 2A fit ensure quick and straightforward installation with standard Phillips No. 3 drivers, reducing assembly time while maintaining a secure, leak-proof connection even under high-pressure scenarios up to 6000 psi.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC thread with a Class 2A fit for precise dimensional accuracy and easy assembly. It is fully threaded and measures 1 1/2" in length with a head diameter of 0.507". The manufacturing and material compliance adhere to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in regulated industries and environmentally conscious supply chains.