S-93882A543 1/4"-20 x 1 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
• Enhanced installation efficiency through UNC coarse threading and thread forming design, reducing assembly time in steel, aluminum, and brass applications
• Secure anti-loosening performance with flanged head design, providing wider bearing surface and improved vibration resistance
• Versatile drive compatibility featuring external hex/slotted drive, accommodating both manual and power tool installation methods
• Maximum material engagement with fully threaded shank, ensuring consistent holding power across the entire fastener length
• Precision fit optimization with No. 2 drill bit compatibility (0.221" diameter), enabling proper thread formation in pre-drilled holes
• Reliable regulatory compliance meeting RoHS 3 and REACH standards, ensuring safe usage in global industrial supply chains

Professional Applications & Engineering Value

These zinc-plated steel hex flange tapping screws deliver exceptional engineering value in metal fabrication and assembly operations. The thread forming design creates strong, permanent threads in ductile materials like steel, aluminum, brass, and cast iron without generating chips, eliminating contamination risks in precision assemblies. The UNC coarse thread configuration provides rapid installation and superior pull-out resistance, while the flanged head distributes clamping force evenly, preventing surface damage and maintaining joint integrity under vibration. The combination of external hex/slotted drive offers flexibility for both high-torque applications and fine adjustments, making these 1/4"-20 tapping screws ideal for automotive, machinery, and structural metal components where reliability and corrosion protection are critical.

Specification Summary & Compliance

These industrial fasteners feature precision UNC coarse threading with standard Class 2A tolerance for consistent engagement. The 1/4"-20 thread size and 1-1/4" length provide optimal dimensional stability, while the thread forming manufacturing process ensures reliable performance in various metal substrates. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental safety and material transparency, meeting international industrial standards for hazardous substance restrictions.