S-90198A772 Length 2 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
• Efficient thread forming technology creates strong, permanent threads in sheet metal without chip removal
• Full threading design ensures maximum grip length and superior holding power across the entire fastener
• Precision 82° countersink angle provides flush mounting and clean finished appearance in sheet metal assemblies
• Reliable Phillips No. 3 drive offers secure tool engagement and controlled installation torque
• Optimized for 0.025" maximum drilling thickness delivering consistent performance in standard sheet metal applications
• Environmental compliance assurance with RoHS 3 and REACH regulations for global market acceptance

Professional Applications & Engineering Value

This 316 stainless steel Phillips flat head tapping screw delivers exceptional engineering value in sheet metal fabrication and assembly operations. The thread forming technology eliminates the risk of loose fasteners by creating precise, tight-fitting threads that resist vibration-induced loosening. The fully threaded design maximizes surface contact area, distributing clamping force evenly to prevent material distortion in thin-gauge metals. The 82° countersink angle ensures proper seating in prepared holes, creating smooth, flush surfaces that meet aesthetic requirements while maintaining structural integrity. These sheet metal fasteners are particularly valuable in electrical enclosures, HVAC systems, and industrial machinery where corrosion resistance and reliable long-term performance are critical.

Specification Summary & Compliance

This No. 12 x 2-1/2" tapping screw features precision thread forming (Type A/AB) with right-hand threading, 0.216" thread diameter, and 11 threads per inch. The flat head design incorporates standard profile with 0.412" head diameter and 0.132" head height, compatible with Phillips No. 3 drive tools. Manufactured to industry standards for sheet metal applications with recommended 3/16" drill bit size (0.1875" diameter). The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.