S-99663A456 Length 1 1/4" 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-threading
• Flanged hex head design provides wider bearing surface for better load distribution and eliminates need for separate washers
• Dual external hex/slotted drive options offer flexibility for various installation tools and torque requirements
• Full threading along entire shank length ensures maximum grip and holding power throughout the material thickness
• Precise thread pitch and diameter (10 threads per inch, 0.242" diameter) delivers reliable engagement and pull-out resistance
• Environmental compliance with RoHS 3 and REACH regulations for safe, sustainable industrial use

Professional Applications & Engineering Value

This 316 stainless steel flanged hex head tapping screw is specifically engineered for demanding sheet metal applications where corrosion resistance and structural integrity are paramount. The thread forming tapping method creates clean, strong threads in sheet metal without generating chips, eliminating contamination risks in sensitive environments. The combination of external hex drive for high-torque installation and slotted option for quick adjustments makes these screws versatile for both production line assembly and field maintenance. The integrated flange distributes clamping force evenly, preventing material deformation and maintaining joint integrity under vibration and thermal cycling. These characteristics make these industrial fasteners ideal for HVAC systems, electrical enclosures, automotive components, and marine equipment where corrosion resistance and long-term reliability are critical.

Specification Summary & Compliance

This No. 14-10 tapping screw features precise inch system dimensions including 1 1/4" length, 3/8" hex head width, and 0.242" thread diameter with 10 threads per inch. Manufactured to thread forming standards (Type A/AB) with right-hand threading and pointed tip for easy starting. The screw requires a 5.5mm (0.2165") drill bit and is suitable for materials up to 0.025" thickness. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.