S-99663A150 Length 3/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and extended service life
• Efficient thread forming technology eliminates the need for pre-tapped holes, reducing assembly time and labor costs
• Enhanced grip and load distribution from the integrated flange and 1/4" hex head, preventing pull-through in sheet metal
• Versatile dual-drive option with external hex/slotted head allows for use with various tools, increasing application flexibility
• Full threading for maximum holding power along the entire 3/8" length, ensuring secure fastening in thin materials
• Optimized for sheet metal applications with a pointed tip and No. 32 drill bit compatibility, enabling precise and clean installations
• Compliance with global environmental standards including RoHS 3 and REACH, ensuring safe and sustainable use in regulated industries

Professional Applications & Engineering Value

These 316 stainless steel hex head tapping screws are engineered to solve common challenges in sheet metal fabrication and assembly. The thread forming design creates strong, precise threads in ductile materials without generating chips, eliminating the risk of contamination in sensitive equipment. The fully threaded configuration and flanged head provide exceptional clamp force and resistance to vibration loosening, making them ideal for industrial fastening in HVAC systems, electronic enclosures, and automotive panels. The combination of external hex/slotted drive offers flexibility for high-torque applications or quick adjustments, while the corrosion-resistant 316 grade ensures long-term reliability in demanding environments, reducing maintenance and replacement frequency.

Specification Summary & Compliance

This No. 6-18 x 3/8" screw features a right-hand thread with a diameter of 0.138" and approximately 18 threads per inch, designed for thread forming applications in materials up to 0.025" thickness. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards for industrial use. The screw's dimensions, including a 1/4" hex head and 0.328" flange diameter, are precision-manufactured to provide consistent performance in sheet metal fastening tasks.