S-90410A113 1/4"-20 x 1 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior material durability with 410 Stainless Steel construction offering excellent corrosion resistance and long-term reliability in demanding industrial environments.
• Effortless installation through Type F thread cutting design that creates precise mating threads in brass, cast iron, and sheet metal without pre-tapping.
• Optimized drive engagement with No. 3 Phillips drive providing secure tool mating and reduced cam-out during high-torque applications.
• Maximum holding power achieved through fully threaded 1/4"-20 UNC coarse thread design that distributes load evenly across the entire fastener length.
• Enhanced material compatibility with blunt tip design that minimizes material displacement while maintaining structural integrity in thin-section applications.
• Precision installation guidance with recommended No. 7 drill bit size (0.201") ensuring proper hole preparation for optimal thread engagement.
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for environmentally responsible manufacturing and global market acceptance.

Professional Applications & Engineering Value

These 1/4-20 UNC thread cutting screws deliver exceptional engineering value in metal fabrication and assembly operations. The 410 Stainless Steel composition provides crucial corrosion resistance while maintaining high tensile strength, making these F-type tapping screws ideal for challenging environments where moisture or chemicals are present. The coarse UNC thread pattern combined with full threading ensures rapid installation and superior pull-out resistance in sheet metal, cast iron, and brass components. The Phillips drive system with No. 3 size offers reliable torque transmission, reducing installation time and tool slippage in high-volume production settings. This combination of material properties and thread cutting design eliminates the need for separate tapping operations, significantly reducing labor costs and assembly time in industrial manufacturing applications.

Specification Summary & Compliance

These thread cutting tapping screws feature precision 1/4"-20 UNC coarse threads with standard Class 2A tolerance for consistent mating performance. The manufacturing process adheres to strict quality controls ensuring dimensional accuracy with 1-1/4" length, 0.492" head diameter, and proper thread form maintenance. Regulatory compliance includes full conformance with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) requirements for chemical safety, making these fasteners suitable for global industrial distribution and environmentally conscious manufacturing operations.