S-91099A228 6-32 x 1" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Exceptional mechanical strength offering 80,000 psi tensile strength and Rockwell B80 hardness for reliable performance under high-stress conditions.
• Effortless installation and flush seating thanks to the Phillips No. 2 drive and 82° undercut flat head design that prevents surface protrusion.
• Secure and vibration-resistant fastening achieved through fully threaded UNC coarse pattern with Class 2A fit for consistent engagement.
• Broad compatibility and time savings with standardized 6-32 thread size and coarse spacing suitable for various materials and assembly lines.
• Long-term reliability and reduced maintenance due to the durable material and precision manufacturing that withstands wear and environmental exposure.
• Compliance with global standards ensuring quality, safety, and environmental responsibility for regulated industries.

Professional Applications & Engineering Value

This 6-32 x 1" flat head screw is engineered to address critical challenges in industrial assembly, such as corrosion-induced failure and installation inefficiency. Crafted from passivated 18-8 stainless steel, it provides excellent resistance to moisture, chemicals, and oxidation, making it ideal for applications in electrical enclosures, machinery, and marine equipment. The fully threaded UNC coarse pattern and Class 2A thread fit ensure quick, secure fastening with minimal cross-threading risks, while the undercut flat head with an 82° countersink angle allows for a smooth, flush finish that enhances aesthetics and safety. These features collectively reduce downtime, extend service life, and support robust performance in demanding environments like automotive, aerospace, and construction sectors.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, including Class 2A thread fit for consistent tolerance and the UNC coarse thread specification. It is manufactured in compliance with ASME B18.6.3 for mechanical and dimensional integrity. Additionally, the product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global supply chains in environmentally conscious industries.