S-98070A161 8-32 x 9/16" Sealing Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior sealing performance with Buna-N rubber O-ring that withstands pressures up to 1500 psi and temperatures from -40° to 225°F
• Enhanced corrosion resistance thanks to 18-8 stainless steel construction with passivated finish for extended service life
• Reliable thread engagement with UNC coarse threads and Class 2A fit ensuring secure fastening in various materials
• Optimized flush mounting through undercut flat head design that sits perfectly countersunk in 100° angled holes
• Efficient installation with Phillips No. 2 drive providing positive torque transfer during assembly
• Full thread coverage along the 9/16" length for maximum grip and load distribution
• Environmental compliance meeting RoHS 3 and REACH regulations for global industrial applications

Professional Applications & Engineering Value

This 8-32 UNC flat head Phillips sealing screw delivers critical performance in demanding environments where fluid containment and pressure resistance are paramount. The combination of 18-8 stainless steel material and passivated finish provides exceptional corrosion resistance against moisture, chemicals, and atmospheric exposure. The integrated Buna-N rubber O-ring creates a reliable seal in applications requiring protection against leaks, dust, and contaminants. The undercut flat head profile ensures proper seating in countersunk holes while the coarse threading offers superior holding power in various substrates. Ideal for industrial equipment, fluid handling systems, and enclosure assemblies where pressure integrity up to 1500 psi must be maintained across wide temperature ranges.

Specification Summary & Compliance

This fully threaded 8-32 UNC screw features Class 2A thread fit for standard tolerance applications with a maximum hole diameter of 0.179". Manufactured to industrial standards with 100° countersink angle compatibility. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance. The 18-8 stainless steel construction provides 70,000 psi tensile strength for reliable mechanical performance in demanding applications.