S-99461A177 Length 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and outdoor applications
• Excellent holding power in plastic materials thanks to the tri-lobe shank design that creates secure, vibration-resistant threads
• Reduced installation stress through thread forming technology that displaces material without creating chips
• Wide compatibility with standard No. 48 drill bits (0.076" diameter) for straightforward installation processes
• Reliable drive engagement with Phillips No. 1 drive style, preventing cam-out during installation
• Full thread coverage along the 1/2" length ensures maximum grip and distribution of clamping force
• Environmental compliance meeting RoHS 3 and REACH standards for global industrial applications

Professional Applications & Engineering Value

These 316 stainless steel TRS thread forming screws are engineered specifically for plastic applications where traditional fasteners often fail. The tri-lobe shank cross-section and thread forming technology create strong, permanent threads in plastic substrates without causing stress cracks or material failure. This design is particularly valuable in industrial fastening applications involving thermoplastics and composite materials, where the 28 TPI fine thread pitch provides superior pull-out resistance. The fully threaded design ensures consistent clamping force distribution, while the blunt tip facilitates proper alignment during installation. These features make them ideal for electronic enclosures, automotive components, and consumer products requiring reliable, vibration-resistant fastening solutions in plastic assemblies.

Specification Summary & Compliance

This No. 2 size TRS tapping screw features a 0.086" thread diameter with 28 threads per inch and 1/2" length in fully threaded configuration. Manufactured to precise dimensional standards with Class 2A thread tolerances for consistent performance. The pan head with Phillips No. 1 drive provides reliable installation capability. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for use in regulated industries worldwide.