S-90420A728 1/4"-20 x 2 13/16" Wood Screws

Key Features & Benefits at a Glance

• Eliminates pre-drilling with integrated cutting wings and No. 5 drill point for faster installation in sheet metal and wood
• Superior corrosion resistance provided by Galvanic Barrier Coated 18-8 Stainless Steel, ensuring long-term reliability in harsh environments
• Exceptional holding power achieved through UNC coarse threading and thread forming design for secure, vibration-resistant fastening
• Optimized for high-strength applications with a 2-13/16" length and 1-1/2" minimum thread engagement for deep material penetration
• Streamlined assembly process featuring a Phillips No. 3 drive and standard flat head profile for flush mounting and easy installation
• Reduced material splitting with partially threaded shank design that minimizes stress concentration in wood applications
• Versatile material compatibility designed specifically for both sheet metal and wood fastening requirements

Professional Applications & Engineering Value

These self-drilling sheet metal screws deliver exceptional engineering value by eliminating multiple installation steps in industrial applications. The Galvanic Barrier Coated 18-8 Stainless Steel construction provides superior corrosion protection while the cutting wings and No. 5 drill point work in tandem to penetrate materials without pilot holes, significantly reducing labor time and tooling requirements. The UNC coarse thread profile ensures maximum pull-out resistance in both metal and wood substrates, while the partially threaded design prevents material splitting in wooden applications. This combination of features makes these Phillips flat head screws ideal for HVAC installations, metal building construction, and industrial wood assemblies where durability and installation efficiency are critical.

Specification Summary & Compliance

Manufactured to precise dimensional standards with UNC 1/4"-20 coarse threading and Class 2A thread tolerances for consistent performance. The right-hand thread forming design ensures proper material displacement and secure fastening. These self-drilling screws feature a standard flat head profile with Phillips No. 3 drive compatibility. The 18-8 stainless steel base material with galvanic barrier coating provides enhanced corrosion resistance while maintaining compliance with industry standards for sheet metal and wood fastening applications.