S-99461A340 Length 3/8" Tapping Screws

Key Features & Benefits at a Glance

• Eliminates pre-tapped holes with TRS thread forming technology, reducing assembly steps and labor costs
• Superior corrosion resistance from 18-8 stainless steel construction, ensuring long-term reliability in humid or chemical environments
• Optimized for plastic materials with tri-lobe shank design that prevents material cracking while providing exceptional pull-out resistance
• Secure drive engagement through Phillips No. 2 drive system, minimizing cam-out and ensuring consistent torque application
• Precision compatibility with No. 29 drill bit (0.136" diameter) for perfect pilot holes and reduced installation stress
• Full-length threading maximizes grip along the entire 3/8" length, creating stronger assemblies in plastic components
• Regulatory compliance assurance with RoHS 3 and REACH standards, meeting international environmental and safety requirements

Professional Applications & Engineering Value

This 18-8 stainless steel TRS tapping screw solves critical challenges in plastic assembly applications where traditional fasteners often fail. The thread forming design creates precise mating threads in plastic substrates without generating chips, eliminating contamination risks in sensitive electronics or medical equipment. The tri-lobe shank cross-section displaces material gradually during installation, preventing stress concentration that leads to plastic cracking or boss failure. With fully threaded construction and 16 threads per inch precision, engineers achieve uniform clamping force distribution across the entire 0.164" diameter engagement area. The Phillips pan head configuration provides both aesthetic appeal and sufficient bearing surface for secure fastening in automotive trim, consumer electronics, and industrial plastic enclosures where vibration resistance and corrosion protection are paramount.

Specification Summary & Compliance

This No. 8 x 3/8" tapping screw features precision TRS thread forming technology with 0.164" thread diameter and 16 TPI thread spacing. Manufactured from 18-8 stainless steel with pan head style and Phillips No. 2 drive. The screw demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. Designed specifically for plastic applications with recommended No. 29 drill bit (0.136" diameter) for optimal performance.