S-99663A419 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
• Efficient thread forming design creates strong, permanent threads in sheet metal without pre-tapping, reducing installation time and labor costs
• Flanged hex head with external drive provides excellent torque transmission and prevents head sinking, ensuring secure fastening in thin materials
• Full threading along 1-1/2" length offers maximum grip and load distribution across the entire fastener engagement
• Precision right-hand threading with 11 threads per inch delivers reliable, vibration-resistant connections in sheet metal assemblies
• Environmental compliance assurance with RoHS 3 and REACH standards, meeting global regulatory requirements for industrial use
• Optimized for 0.1875" drill bits with 0.025" maximum drilling thickness, providing precise compatibility with standard sheet metal working specifications

Professional Applications & Engineering Value

These No. 12 thread forming tapping screws deliver exceptional engineering value in sheet metal fabrication and assembly applications. The 316 stainless steel composition provides outstanding resistance to corrosion, chemicals, and extreme temperatures, making these flanged hex head screws ideal for marine, chemical processing, and outdoor equipment manufacturing. The thread forming design eliminates the need for separate tapping operations, reducing production time while creating stronger, more reliable threads that won't strip or loosen under vibration. The combination of external hex drive and flanged head design ensures maximum clamping force distribution, preventing material deformation in thin-gauge metals. These industrial-grade tapping screws solve critical challenges in metalworking by providing durable, maintenance-free fastening solutions that withstand demanding operating conditions.

Specification Summary & Compliance

These No. 12 tapping screws feature precision thread forming (Type A/AB) design with 0.216" thread diameter and 11 threads per inch for consistent performance. The 1-1/2" fully threaded length and 0.432" flange diameter provide optimal engagement and load distribution. Manufactured to industry standards for sheet metal applications with compatibility for 3/16" (0.1875") drill bits and 0.025" maximum drilling thickness. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets.