S-94209A190 1/4"-20 x 1 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments
• Enhanced torque transmission and reduced cam-out with Torx Plus IP30 drive system for reliable installation and removal
• Secure, vibration-resistant fastening achieved through the tri-lobe shank design that prevents loosening under stress
• Excellent thread-forming capability in softer materials like aluminum, brass, and copper without requiring pre-tapped holes
• Optimized for high-volume assembly with coarse UNC threading enabling faster installation and reduced operator fatigue
• Consistent performance across applications with fully threaded 1-1/2" length providing maximum engagement strength
• Environmental compliance assurance meeting RoHS 3 and REACH standards for sustainable manufacturing operations

Professional Applications & Engineering Value

These zinc-plated steel Torx Plus tapping screws deliver exceptional engineering value in aluminum, brass, and copper applications where traditional fastening methods often fail. The thread forming design creates strong, permanent threads in ductile materials without generating chips, eliminating contamination risks in sensitive assemblies. The tri-lobe shank cross-section provides superior resistance to vibrational loosening, making these 1/4"-20 coarse thread screws ideal for automotive components, electrical enclosures, and machinery where reliability is critical. With Torx Plus IP30 drive compatibility, manufacturers benefit from higher torque transmission and reduced tool wear, significantly improving assembly line efficiency while maintaining consistent clamp load in high-volume production environments.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread tolerances and UNC coarse thread profile (1/4"-20). Features include fully threaded 1-1/2" length with -0.03" to 0" tolerance, standard pan head configuration (0.473" diameter), and blunt tip design. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets. Recommended for use with 5.5 mm (0.2165") drill bits in thread-forming applications.