S-98070A158 8-32 x 7/16" Sealing Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Reliable high-pressure sealing with integrated Buna-N rubber O-ring, rated for up to 1500 psi to prevent leaks in demanding environments
• Superior corrosion resistance from 18-8 stainless steel construction with passivated finish, ensuring longevity in harsh conditions
• Exceptional mechanical strength with 70,000 psi tensile strength for secure fastening under high stress loads
• Broad temperature compatibility with O-ring performance maintained from -40° to 225°F for versatile application use
• Precision thread engagement through UNC coarse threading with Class 2A fit for quick installation and reliable holding power
• Optimized flush mounting with undercut flat head design and 100° countersink angle for smooth surface finishes
• Industry compliance assurance meeting RoHS 3 and REACH standards for global regulatory acceptance

Professional Applications & Engineering Value

These 8-32 UNC flat head screws with integrated Buna-N rubber O-rings solve critical sealing challenges in industrial equipment, hydraulic systems, and pressurized enclosures. The 18-8 stainless steel construction provides inherent corrosion resistance, while the passivated finish enhances surface durability against chemical exposure. The undercut flat head profile ensures proper seating in countersunk applications, preventing protrusion issues. With fully threaded coarse UNC patterning and Class 2A fit, these screws deliver consistent clamping force across the entire fastener length, making them ideal for high-pressure sealing applications where vibration resistance and environmental protection are paramount.

Specification Summary & Compliance

This flat head Phillips screw features precision UNC coarse threading with Class 2A thread fit for standard industrial applications. Manufacturing conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance standards. The fastener delivers consistent dimensional accuracy with 8-32 thread size, 7/16" length, and maximum hole diameter compatibility of 0.179". The Buna-N rubber O-ring maintains sealing integrity across the specified temperature range while the passivated finish on 18-8 stainless steel provides enhanced corrosion protection.