S-90122A347 Length 3" Tapping Screws

Key Features & Benefits at a Glance

• Eliminates pre-drilling requirements with integrated No. 4 drill tip that penetrates up to 0.312" thickness in aluminum and sheet metal
• Superior corrosion resistance through specialized alloy steel coating for extended service life in demanding environments
• Secure thread-forming installation creates stronger, vibration-resistant connections in ductile materials
• Optimized head design with 82° countersink angle provides flush finishing and reduced stress concentration
• Enhanced driving efficiency with Phillips No. 3 drive for reliable torque transfer and reduced cam-out
• Versatile partial threading allows for precise clamp load control across various material thicknesses
• Regulatory compliance assurance with RoHS 3 certification for global industrial applications

Professional Applications & Engineering Value

These BSD tapping screws solve critical fastening challenges in aluminum and sheet metal fabrication by combining drilling and threading operations into a single installation step. The corrosion-resistant alloy steel construction maintains integrity in environments where moisture and chemical exposure would degrade standard fasteners. The thread-forming design creates permanent, high-strength threads in parent material without chip removal, eliminating the risk of loose connections from vibration. With their 82° countersink angle and flat head profile, these screws provide clean, flush finishes while the 1/2" drill tip ensures consistent penetration through specified thicknesses without pilot holes, significantly reducing assembly time and labor costs in high-volume production environments.

Specification Summary & Compliance

Manufactured to precise inch system dimensions including 1/4"-20 thread configuration with Class 2A tolerance, 3" length with partial threading, and standard flat head profile. These thread-forming BSD screws feature right-hand threading and are engineered for use in aluminum and sheet metal applications up to 0.312" thickness. Compliant with RoHS 3 (2015/863/EU) environmental regulations, ensuring suitability for industrial applications requiring hazardous substance restrictions.