S-90505A186 8-32 x 5/16" Sealing Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh environments and extended service life.
• Reliable pressure sealing up to 1500 psi with an integrated Buna-N Rubber O-ring, preventing leaks in critical applications.
• Broad temperature tolerance from -40° to 225°F ensures consistent performance and seal integrity in fluctuating thermal conditions.
• High tensile strength of 70,000 psi provides robust clamping force and resistance to mechanical failure under load.
• Precise Class 2A thread fit with UNC coarse spacing for easy, fast assembly and reduced risk of cross-threading.
• Flush, secure installation with an 82° countersink angle and undercut flat head profile for a smooth surface finish.
• Compliance with RoHS 3 and REACH regulations guarantees environmental safety and suitability for regulated industries.

Professional Applications & Engineering Value

This 8-32 UNC Flat Head Phillips Sealing Screw is engineered to solve critical challenges in industrial sealing applications. The combination of 316 Stainless Steel and a Buna-N Rubber O-ring provides exceptional resistance to corrosion, chemicals, and moisture, making it ideal for machinery, fluid systems, and outdoor equipment. The fully threaded design with Class 2A coarse spacing ensures quick, reliable installation, while the flat head with undercut profile and 82° countersink angle offers a secure, flush fit that minimizes protrusion and vibration loosening. This screw delivers dependable performance in high-pressure environments up to 1500 psi, preventing leaks and maintaining system integrity in demanding sectors like automotive, marine, and chemical processing.

Specification Summary & Compliance

This screw features precise UNC coarse thread spacing with a Class 2A thread fit for standard tolerance and easy assembly. The 82° countersink angle and flat head undercut profile ensure optimal seating. It is manufactured to comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.