S-90197A146 Length 3/8" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-lasting performance in demanding industrial environments
• Excellent thread-forming capability creates strong, permanent threads in sheet metal without pre-tapping, reducing installation time and labor costs
• Dual drive versatility with external hex/slotted head accommodates both wrench and screwdriver applications for flexible installation options
• Enhanced grip and stability from the flanged design provides wider bearing surface, preventing pull-through in thin sheet metal applications
• Precision needle point facilitates easy starting and accurate placement, minimizing material damage during installation
• Full threading along the 3/8" length ensures maximum engagement and holding power throughout the entire fastener length
• Right-hand threading with 18 TPI delivers optimal thread engagement and superior vibration resistance in sheet metal assemblies

Professional Applications & Engineering Value

These No. 6 zinc-plated steel tapping screws are specifically engineered to address common challenges in sheet metal fabrication and assembly. The thread forming design eliminates the need for pre-tapped holes, significantly reducing installation time while creating stronger, more reliable threads that resist loosening under vibration. The zinc-plated steel construction provides essential corrosion protection for industrial environments, while the external hex/slotted drive offers installation flexibility for both high-torque applications and precision adjustments. The flanged feature distributes clamping force evenly, preventing material distortion in thin-gauge metals up to 0.05" thickness. These needle point screws with 0.138" thread diameter and 18 threads per inch deliver exceptional holding power in HVAC systems, electrical enclosures, and metal furniture applications where reliability is critical.

Specification Summary & Compliance

These thread forming tapping screws feature precise 0.138" thread diameter with 18 threads per inch and are designed for use with No. 32 drill bit (0.116" diameter). The screws maintain standard thread tolerances for secure fastening in sheet metal applications up to 0.05" thickness. Manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety standards. The fully threaded design with right-hand threading provides consistent performance across industrial applications requiring reliable metal-to-metal fastening solutions.