S-98070A084 2-56 x 3/8" Sealing Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior Sealing Performance: Integrated silicone rubber O-ring ensures reliable fluid and gas sealing, preventing leaks in high-pressure environments up to 20,000 psi.
• Exceptional Temperature Resilience: O-ring maintains integrity across a wide temperature range from -150°F to 500°F, ideal for extreme industrial applications.
• Enhanced Corrosion Resistance: 18-8 stainless steel construction with passivated finish provides excellent protection against rust and chemical degradation in harsh conditions.
• Precision Thread Fit: Class 2A UNC coarse threads offer consistent, reliable engagement for secure fastening and vibration resistance.
• Optimized Drive Efficiency: Phillips No. 1 drive style enables quick installation with standard tools, reducing assembly time and labor costs.
• Flush Mounting Design: Flat head with 82° countersink angle allows for smooth, unobtrusive surface finishes in precision assemblies.
• Regulatory Compliance Assurance: Meets RoHS 3 and REACH standards, ensuring safe, environmentally responsible use in global industrial supply chains.

Professional Applications & Engineering Value

This 2-56 UNC flat head Phillips screw is engineered to address critical sealing challenges in demanding industrial environments. The combination of 18-8 stainless steel material and passivated finish provides exceptional corrosion resistance for applications exposed to moisture, chemicals, and extreme temperatures. The integrated silicone rubber O-ring creates a reliable seal that prevents fluid and gas leakage under pressures up to 20,000 psi, making it ideal for hydraulic systems, pneumatic equipment, and precision instrumentation. The fully threaded design with Class 2A fit ensures consistent engagement and vibration resistance, while the flat head profile with standard countersink allows for flush mounting in tight spaces. These features make it particularly valuable for OEM applications in aerospace, automotive, and industrial machinery where reliable sealing and corrosion resistance are paramount.

Specification Summary & Compliance

This sealing screw features precision 2-56 UNC coarse threads with Class 2A fit for consistent dimensional accuracy. The manufacturing complies with standard inch system specifications, including a 0.086" thread diameter and 3/8" length. The product meets RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety. The silicone rubber O-ring material is rated for extreme temperature applications from -150°F to 500°F, while the 18-8 stainless steel construction provides 70,000 psi tensile strength for demanding mechanical applications.