S-91802A547 1/4"-20 x 1 3/4" ASME B18.6.3 Stainless Steel Phillips Oval Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B80 hardness for reliable load-bearing performance
• Optimized drive engagement through Phillips No. 3 drive design, ensuring secure installation and reduced cam-out risk
• Enhanced thread reliability with fully threaded UNC coarse spacing and Class 2A fit for consistent fastening in various materials
• Streamlined assembly process featuring right-hand threading and standard oval head profile for efficient installation
• Long-term durability maintained through passivated surface treatment, preventing rust and extending service life
• Regulatory compliance assurance meeting ASME B18.6.3 standards and environmental regulations for global industrial applications

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these passivated 18-8 stainless steel oval head screws deliver exceptional corrosion resistance where moisture and chemicals pose challenges. The fully threaded UNC coarse spacing with Class 2A fit ensures reliable engagement in various substrates, while the Phillips No. 3 drive provides secure torque transmission during installation. Particularly valuable in industrial machinery assembly, electrical enclosures, and outdoor equipment where 80,000 psi tensile strength prevents joint failure under vibration and dynamic loads. The standard oval head profile offers a flush finish while maintaining structural integrity, making these flat head screws ideal for applications requiring both aesthetic appeal and mechanical performance.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse thread spacing (1/4"-20). Complies with ASME B18.6.3 specifications for mechanical and dimensional requirements. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards. Features include 82° countersink angle, right-hand thread direction, and full threading along the 1-3/4" length for consistent fastening performance across industrial applications.