S-90096A580 5/16"-18 x 5/8" ASME B18.6.3, SAE J933 Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
• Enhanced load distribution through the 0.676" flange diameter, preventing surface damage and maintaining joint integrity
• Maximum torque transmission with external hex drive design, allowing for secure installation with standard tools
• Self-tapping efficiency with F-type thread cutting design, eliminating the need for pre-tapped holes in multiple materials
• Reliable coarse thread engagement with UNC 5/16"-18 threading, providing excellent pull-out resistance in soft materials
• Versatile material compatibility specifically engineered for aluminum, brass, cast iron, and sheet metal applications
• Full regulatory compliance meeting ASME B18.6.3 standards and RoHS 3 environmental requirements

Professional Applications & Engineering Value

These zinc-plated steel hex flange tapping screws deliver exceptional engineering value by solving critical fastening challenges in industrial assembly operations. The F-type thread cutting design with UNC coarse threads enables direct installation into aluminum, brass, cast iron, and sheet metal without pre-tapping, significantly reducing assembly time and labor costs. The external hex drive configuration ensures maximum torque application during installation, while the integrated flange provides superior load distribution that prevents material deformation and maintains structural integrity. This combination of features makes these tapping screws ideal for high-volume manufacturing environments where reliability, speed of installation, and consistent performance across multiple material types are essential for operational efficiency.

Specification Summary & Compliance

Manufactured to precise dimensional standards with UNC coarse threads (5/16"-18) and full threading along the 5/8" length. These screws feature a Class 2A thread fit for reliable engagement and are manufactured in compliance with ASME B18.6.3 specifications where identified by SAE J933. The product meets RoHS 3 (2015/863/EU) compliance requirements for environmentally conscious operations and is specifically designed for use with K drill bit (0.281" diameter) for optimal thread formation in various metal substrates.