S-99461A205 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction for long-lasting performance in demanding environments
• Excellent thread-forming capability with TRS tri-lobe shank design that creates secure, vibration-resistant threads in plastic materials
• Reduced installation stress thanks to the blunt tip design that minimizes cracking and damage to plastic components
• Reliable drive engagement with No. 1 Phillips drive that provides consistent torque transfer during installation
• Optimized thread engagement featuring 24 threads per inch for maximum holding power in plastic assemblies
• Comprehensive environmental compliance meeting RoHS 3 and REACH standards for global industrial applications
• Precision installation guidance with recommended No. 46 drill bit (0.081") for proper hole preparation

Professional Applications & Engineering Value

These No. 3 x 1/2" TRS thread forming screws are specifically engineered to address common challenges in plastic fastening applications. The 18-8 stainless steel construction provides exceptional corrosion resistance, while the tri-lobe shank design creates permanent, high-retention threads through material displacement rather than cutting. This thread forming action eliminates chip formation, preventing contamination in sensitive assemblies. The Phillips drive system ensures reliable installation with standard tools, and the blunt tip design prevents stress concentration that could lead to plastic cracking. These features make these tapping screws ideal for electronic enclosures, automotive plastic components, and consumer products where reliable, vibration-resistant fastening is critical.

Specification Summary & Compliance

These inch-system fasteners feature precision Class 2A thread tolerances with a thread diameter of 0.099" and are fully threaded for maximum engagement. The TRS (Thread Rolling Screw) design follows industry-standard thread forming specifications for plastic applications. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and suitability for global industrial markets. The recommended No. 46 drill bit (0.081" diameter) ensures proper hole preparation for optimal thread formation and holding strength.