S-98070A320 8-32 x 3/8" Sealing Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance: Integrated silicone O-ring creates reliable seals against fluids and gases, preventing leaks in demanding applications.
• Exceptional Pressure & Temperature Resistance: Withstands up to 20,000 psi pressure and operates reliably across a wide temperature range from -150°F to 500°F.
• Enhanced Corrosion Resistance: Made from 18-8 Stainless Steel with a passivated finish for excellent durability in harsh environments.
• Reliable Fastening & Easy Installation: Class 2A thread fit and UNC coarse threads ensure consistent engagement and easier driving with a standard Phillips No. 2 drive.
• Flush Mounting & Space Efficiency: Flat head design with a standard 100° countersink allows for a smooth, unobtrusive surface finish.
• Full Thread Engagement: Fully threaded shank provides maximum grip and holding power across the entire 3/8" length.
• Compliance & Safety Assurance: Meets RoHS 3 and REACH regulations, ensuring environmental safety and suitability for regulated industries.

Professional Applications & Engineering Value

This 8-32 UNC Flat Head Phillips screw is engineered to solve critical sealing challenges in industrial and high-pressure systems. The combination of 18-8 Stainless Steel and a passivated finish provides robust corrosion resistance, essential for machinery exposed to moisture, chemicals, or outdoor elements. The integrated silicone rubber O-ring is key—it maintains elasticity and sealing integrity across extreme temperatures from -150°F to 500°F, preventing failure in thermal cycling conditions. With a maximum pressure rating of 20,000 psi, this fastener is ideal for hydraulic systems, pneumatic equipment, and pressurized enclosures where leak prevention is non-negotiable. The flat head and Phillips drive facilitate easy, flush installation in pre-countersunk holes, making it a top choice for assemblies requiring a smooth surface profile and reliable, high-pressure sealing.

Specification Summary & Compliance

This screw adheres to UNC coarse thread standards with a Class 2A thread fit for consistent, reliable fastening. It is fully threaded and features a standard 100° countersink angle. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for use in environmentally conscious and regulated industrial applications.