S-99663A330 Length 1 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
• Self-tapping thread forming design creates strong, permanent threads in sheet metal without requiring pre-tapped holes
• Flanged hex head provides increased bearing surface for better load distribution and eliminates the need for separate washers
• External hex drive with slotted option offers versatile installation using standard tools while preventing cam-out during high-torque applications
• Fully threaded shank ensures maximum grip length and uniform stress distribution along the entire fastener
• Optimized for No. 21 drill bit compatibility (0.159" diameter) with maximum 0.025" drilling thickness for precise sheet metal applications
• Environmental compliance assurance with RoHS 3 and REACH regulations for global manufacturing and supply chain requirements

Professional Applications & Engineering Value

This 316 stainless steel hex head tapping screw delivers exceptional engineering value in demanding sheet metal applications where corrosion resistance and structural integrity are paramount. The thread forming technology creates stronger, more reliable threads by displacing material rather than removing it, resulting in improved pull-out resistance and vibration resistance. The combination of external hex drive and flanged design provides superior clamping force distribution while accommodating high installation torque. These fully threaded fasteners with 12 TPI right-hand threads offer consistent performance in assembly lines, HVAC systems, electrical enclosures, and industrial equipment where exposure to moisture, chemicals, or temperature variations would compromise ordinary fasteners. The precise No. 10 screw size and 1-1/2" length make them ideal for joining multiple sheet metal layers or attaching components to metal frames.

Specification Summary & Compliance

This No. 10 x 1-1/2" tapping screw features inch system measurements with Class 2A thread tolerances and standard 12 TPI thread pitch. The fastener complies with RoHS 3 (2015/863/EU) regulations restricting hazardous substances and REACH (EC 1907/2006) requirements for chemical safety. Manufacturing follows industry standards for thread forming tapping screws (Type A/AB) with pointed tip design for easy starting and fully threaded configuration for maximum engagement. The hex head dimensions (0.151" height, 0.313" width) and flange diameter (0.414") ensure compatibility with standard installation tools and applications.