S-93880A190 Length 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 driving torque and reduced cam-out with combined external hex/slotted drive for reliable installation
• Efficient thread forming action creates strong, permanent threads in sheet metal without pre-tapping
• Integrated flange design eliminates need for separate washers, providing wider bearing surface and faster assembly
• Full threading along entire shank length ensures maximum grip and uniform stress distribution
• Precision-matched to No. 29 drill bits (0.136" diameter) for optimal hole preparation and thread engagement
• Environmental compliance assurance with RoHS 3 (2015/863/EU) certification for regulated applications

Professional Applications & Engineering Value

These No. 8-18 thread forming tapping screws deliver exceptional performance in sheet metal assembly applications where vibration resistance and pull-out strength are critical. The zinc-plated steel construction provides reliable corrosion protection while maintaining the high tensile strength needed for structural fastening. The Type B thread forming design displaces material rather than removing it, creating zero-clearance threads that resist loosening under dynamic loads. The flanged hex head with dual drive options accommodates both speed-driven production with hex tools and manual adjustments with standard screwdrivers. Engineered specifically for 0.136" pre-drilled holes (No. 29 drill bit), these screws eliminate thread stripping and ensure consistent clamping force across multiple sheet metal thicknesses.

Specification Summary & Compliance

This flanged hex tapping screw features a No. 8 size with 0.164" thread diameter and 18 TPI right-hand threads in Class 2A thread fit for standard industrial applications. The fully threaded 1/4" length with blunt tip design ensures complete engagement in pre-drilled materials. Manufacturing complies with RoHS 3 (2015/863/EU) regulations, containing no restricted hazardous substances. The external hex drive measures 1/4" across flats with integrated 0.348" diameter flange for distributed load bearing.