S-99663A410 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction for long-lasting performance in harsh environments
• Efficient thread forming technology creates strong, permanent threads in sheet metal without chips or debris
• Integrated flange design eliminates need for separate washers while providing superior load distribution
• Dual drive compatibility with external hex and slotted heads offers flexibility for various installation tools
• Full threading with pointed tip ensures quick starting and maximum thread engagement in materials up to 0.025" thickness
• Precision 11 threads per inch delivers optimal holding power and vibration resistance in sheet metal applications
• Environmental compliance with RoHS 3 and REACH regulations for sustainable manufacturing practices

Professional Applications & Engineering Value

These No. 12 flanged tapping screws are engineered specifically for demanding sheet metal applications where reliability and corrosion resistance are critical. The 316 stainless steel composition provides exceptional protection against chemical exposure and atmospheric corrosion, making these thread forming screws ideal for outdoor equipment, marine environments, and industrial machinery. The A/AB tapping screw type with right-hand thread direction and fully threaded design ensures maximum pull-out strength and vibration resistance in thin materials. The combination of external hex/slotted drive offers installation versatility while the 0.432" flange diameter distributes clamping force effectively, preventing material deformation and maintaining joint integrity in automotive, HVAC, and electronic enclosure assemblies.

Specification Summary & Compliance

These thread forming tapping screws feature precision No. 12 size with 0.216" thread diameter and 3/4" length, manufactured to exacting standards for consistent performance. The screws comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring they meet current industry compliance requirements. Designed for use with 3/16" drill bits (0.1875" diameter), these A/AB type tapping screws provide reliable fastening in sheet metal applications with 0.025" maximum drilling thickness, delivering professional-grade results across various industrial sectors.