S-90395A151 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments
• Excellent thread-forming capability with A/AB thread design creates secure, vibration-resistant fastenings in sheet metal without pre-tapping
• Optimized drive efficiency through No. 1 square drive and pan head design prevents cam-out and enables high-torque installation
• Maximum material engagement with fully threaded shank and pointed tip ensures consistent holding power across the entire fastener length
• Precision drilling compatibility with No. 32 drill bit (0.116" diameter) for clean, accurate installations in sheet metal up to 0.025" thickness
• Reliable dimensional consistency with standardized No. 6-18 thread specifications (0.138" diameter, 18 TPI) ensures interchangeability
• Environmental compliance assurance meeting RoHS 3 and REACH standards for sustainable manufacturing and global market acceptance

Professional Applications & Engineering Value

These zinc-plated steel tapping screws deliver exceptional performance in sheet metal applications where vibration resistance and material integrity are critical. The A/AB thread forming design creates strong, permanent threads in parent material without chip formation, eliminating contamination risks in sensitive assemblies. The combination of pan head style and No. 1 square drive provides superior torque transmission while maintaining a low-profile installation. Engineered for sheet metal fastening up to 0.025" thickness, these screws solve common challenges of strip-out and loose connections in thin-gauge materials. The fully threaded configuration with pointed tip ensures immediate engagement and consistent clamping force distribution, making them ideal for HVAC systems, electronic enclosures, and automotive components where reliability is non-negotiable.

Specification Summary & Compliance

This No. 6-18 x 3/4" tapping screw features precise inch-system dimensions including 0.138" thread diameter, 18 threads per inch, and standard Class 2A thread tolerances. The thread forming tapping method follows industry-standard A/AB specifications for consistent performance. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring hazardous substance restriction compliance. Designed for use with No. 32 drill bits (0.116" diameter), these screws maintain dimensional accuracy across production batches for reliable interchangeability in industrial applications.