S-98070A157 8-32 x 3/8" Sealing Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Reliable Sealing Performance - Integrated Buna-N rubber O-ring creates effective seals up to 1500 psi, preventing leaks in pressurized applications
• Superior Corrosion Resistance - 18-8 stainless steel construction with passivated finish ensures long-term durability in harsh environments
• Wide Temperature Compatibility - Maintains sealing integrity across extreme temperatures from -40° to 225°F
• Precision Thread Engagement - Class 2A UNC coarse threads provide consistent, reliable fastening with excellent pull-out resistance
• Optimized Head Design - Flat head with undercut profile ensures flush mounting while Phillips No. 2 drive enables efficient installation
• High Tensile Strength - 70,000 psi tensile strength delivers robust mechanical performance for demanding applications
• Regulatory Compliance Ready - Meets RoHS 3 and REACH standards for use in regulated industrial environments

Professional Applications & Engineering Value

This 8-32 UNC flat head screw with integrated Buna-N rubber O-ring addresses critical sealing challenges in industrial equipment and machinery. The 18-8 stainless steel construction, enhanced by passivated finish, provides exceptional resistance to corrosion and chemical exposure, making it ideal for harsh operating environments. The Class 2A thread fit with coarse UNC threading ensures reliable engagement in various materials, while the flat head with undercut design allows for flush mounting in countersunk applications. Engineered to withstand pressures up to 1500 psi, this sealing fastener is particularly valuable in hydraulic systems, pneumatic equipment, and fluid handling applications where leak prevention is critical. The combination of fully threaded design and Phillips No. 2 drive facilitates quick installation while maintaining consistent sealing performance across the specified temperature range.

Specification Summary & Compliance

This 3/8" flat head screw features precision 8-32 UNC coarse threads with Class 2A fit for consistent dimensional accuracy. Manufacturing adheres to standard inch system specifications with 100° countersink angle and 0.179" maximum hole diameter compatibility. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental and safety standards are met for industrial applications worldwide. The right-hand thread direction and fully threaded construction provide reliable performance in automated assembly processes.