S-93882A538 1/4"-20 x 5/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
• Enhanced holding power through thread forming (SW) design that creates strong, permanent threads without chips
• Simplified installation with external hex/slotted drive for secure tool engagement and faster assembly
• Increased bearing surface from the integrated flange design, distributing load evenly and preventing pull-through
• Broad material compatibility for reliable performance in steel, aluminum, brass, cast iron, and sheet metal applications
• Optimized thread engagement with UNC coarse spacing ensuring quick starts and reduced cross-threading risks
• Full-length threading provides consistent clamping force along the entire fastener length for maximum joint integrity

Professional Applications & Engineering Value

These 1/4"-20 zinc-plated steel flanged hex tapping screws deliver exceptional value in metal fabrication and assembly operations. The thread forming technology eliminates the need for pre-tapped holes while creating stronger, more reliable threads that won't loosen under vibration. The flanged head design serves as an integrated washer, reducing installation time and providing superior surface distribution compared to standard hex heads. With UNC coarse thread spacing and fully threaded construction, these screws offer rapid installation in steel, aluminum, brass, cast iron, and sheet metal applications where vibration resistance and pull-out strength are critical. The combination of external hex drive with slotted option provides flexibility for both power and manual tooling in confined spaces.

Specification Summary & Compliance

These tapping screws feature precise UNC thread standards with Class 2A fit for consistent performance. The 1/4"-20 thread size with coarse spacing ensures reliable engagement in various materials. Manufactured to industry standards for thread forming screws, these fasteners are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making them suitable for global industrial applications requiring strict chemical substance control.