S-99461A312 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh or humid environments where fastener integrity is critical.
• Exceptional holding power in plastic due to the Tri-Lobe shank design, which creates secure, vibration-resistant assemblies without stripping material.
• Efficient, high-torque installation enabled by the Phillips No. 2 drive, reducing tool slippage and speeding up assembly processes.
• Eliminates the need for pre-tapping as the thread forming (TRS) technology cuts costs and labor by forming precise mating threads during installation.
• Optimized for plastic substrates with a blunt tip and specific No. 32 drill bit size (0.116"), minimizing cracking and ensuring clean thread formation.
• Full-length threading provides consistent engagement along the entire 1/2" length, enhancing pull-out strength and load distribution.
• Compliance with strict environmental regulations including RoHS 3 and REACH, ensuring safety and suitability for global industrial supply chains.

Professional Applications & Engineering Value

These 316 stainless steel TRS plastic tapping screws are engineered to address common challenges in plastic assembly, such as material cracking, poor thread retention, and corrosion-induced failure. The Tri-Lobe thread forming design displaces plastic material without removing it, creating strong, clean internal threads that resist loosening under vibration and thermal cycling. This is particularly valuable in industrial fasteners for electronics enclosures, automotive trim, and consumer appliances, where corrosion resistant screws must maintain clamp load without degrading the polymer. The combination of a Phillips drive and optimized geometry allows for rapid installation with standard tools, reducing assembly time while providing reliable, long-term performance in demanding applications.

Specification Summary & Compliance

This No. 6 x 1/2" tapping screw features a right-hand thread, fully threaded shank, and standard pan head with a diameter of 0.27". It is designed for use with a No. 32 drill bit (0.116" diameter) and conforms to typical thread forming screw standards for plastic substrates. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets current environmental and safety requirements for industrial and commercial use.