S-90434A123 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior plastic retention with Tri-Lobe shank design that creates strong, vibration-resistant threads in plastic materials
• Enhanced corrosion resistance through Black Oxide Steel construction, extending service life in industrial environments
• Efficient installation with Phillips No. 2 drive that provides reliable torque transfer and reduces cam-out risk
• Optimal flush mounting featuring 82° countersink angle and flat head design for smooth, professional finishes
• Maximum thread engagement with fully threaded design and 16 TPI for superior holding power in plastic applications
• Reduced assembly steps through thread-forming technology that eliminates the need for pre-tapped holes
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications

Professional Applications & Engineering Value

These TRS tapping screws are specifically engineered to address common challenges in plastic fastening applications where material integrity and vibration resistance are critical. The Tri-Lobe shank cross-section displaces plastic material during installation, creating permanent, high-strength threads that resist loosening under dynamic loads. The Black Oxide Steel construction provides essential corrosion protection while maintaining the hardness required for thread forming operations. With fully threaded design and 16 threads per inch, these screws deliver maximum pull-out strength in thermoplastics and other polymer materials commonly used in automotive components, electrical enclosures, and consumer products manufacturing. The 82° countersink angle ensures proper seating in standard chamfered holes, preventing surface damage while maintaining structural integrity.

Specification Summary & Compliance

These No. 8 x 1/2" TRS tapping screws feature precision thread forming technology with Tri-Lobe shank design, manufactured to exacting dimensional standards. The screws are compatible with No. 23 drill bit (0.154" diameter) for proper hole preparation in plastic materials. All components are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in global industrial applications while maintaining consistent performance across production batches.