S-93945A046 Length 2 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh industrial environments.
• Enhanced driving torque and reduced cam-out thanks to the square drive design, providing secure installation and minimizing tool slippage.
• Excellent thread retention and vibration resistance through thread forming technology, which creates strong, permanent threads in sheet metal without pre-tapping.
• Flush, low-profile installation with the standard flat head and 82° countersink angle, ideal for applications where a smooth surface finish is critical.
• Full-length threading ensures consistent grip along the entire 2-1/2" length, maximizing holding power in sheet metal assemblies.
• Compliance with RoHS 3 and REACH regulations guarantees safe, environmentally responsible use in global industrial supply chains.
• Optimized for No. 21 drill bit compatibility, simplifying installation and reducing preparation time in sheet metal fabrication.

Professional Applications & Engineering Value

These No. 10-12 flat head tapping screws are precision-engineered for demanding sheet metal applications, where vibration loosening and material fatigue are common challenges. The 18-8 stainless steel material offers excellent strength and corrosion resistance, essential for outdoor equipment, HVAC systems, and electronic enclosures. The thread forming (A/AB type) design displaces material to create robust, strip-resistant threads without chips, eliminating the need for pre-tapped holes and reducing assembly labor. Combined with the square drive and fully threaded shank, these screws deliver reliable clamping force and ease of installation in thin-gauge metals up to 0.025" thickness, making them a trusted choice for industrial manufacturers seeking durability and efficiency.

Specification Summary & Compliance

This product adheres to standard inch measurements with a No. 10 screw size and 12 threads per inch, ensuring precise fit in pre-drilled holes (recommended No. 21 drill bit, 0.159" diameter). The flat head features an 82° countersink angle for flush mounting. Manufacturing and material compliance include RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming the absence of restricted hazardous substances for safe industrial use.