S-94209A170 1/4"-20 x 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
• Enhanced torque transmission through Torx Plus IP30 drive system, reducing cam-out and tool wear
• Exceptional holding power in soft materials with Tri-Lobe shank design that displaces material during thread forming
• Reliable fastening performance with UNC coarse threads providing quick installation and vibration resistance
• Optimized for multiple applications with thread-forming capability in aluminum, brass, and copper substrates
• Consistent installation depth ensured by precise length tolerance and fully threaded design
• Broad compatibility with standard 5.5mm drill bits for simplified hole preparation

Professional Applications & Engineering Value

These zinc-plated steel tapping screws deliver exceptional engineering value in applications requiring secure fastening in aluminum, brass, and copper components. The Tri-Lobe shank design creates strong, permanent threads through material displacement rather than cutting, eliminating chip formation issues common in soft metals. The Torx Plus IP30 drive system provides superior torque transfer, preventing fastener damage during high-torque installation in production environments. With UNC coarse threads and fully threaded configuration, these screws offer rapid installation and reliable performance in assembly lines, electrical enclosures, and machinery where vibration resistance is critical. The rounded pan head provides a finished appearance while distributing clamp load effectively across joined surfaces.

Specification Summary & Compliance

This 1/4-20 tapping screw features precision manufacturing with length tolerance of -0.03" to 0" and meets UNC coarse thread standards for consistent performance. The fastener complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety. Engineered for thread forming applications with Tri-Lobe shank technology, this industrial-grade fastener maintains dimensional accuracy throughout its specified parameters for reliable integration into your manufacturing processes.