S-90065A259 Length 3 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 environments
• Efficient thread-forming design (Type A) creates strong, permanent threads in sheet metal without pre-tapping
• Optimal sheet metal penetration with pointed tip and 0.025" maximum drilling thickness capability
• Clean, flush installation achieved through standard 82° countersink angle and flat head profile
• Secure, slip-resistant driving with No. 2 Phillips drive for consistent torque application
• Full-length thread engagement provides maximum holding power across the entire 3-1/2" length
• Regulatory compliance assurance with RoHS 3 and REACH environmental standards

Professional Applications & Engineering Value

These 18-8 stainless steel tapping screws deliver exceptional performance in demanding sheet metal applications where corrosion resistance and structural integrity are paramount. The thread forming design eliminates the need for separate tapping operations, reducing installation time and labor costs while creating stronger thread engagement than conventional fastening methods. The combination of fully threaded construction and right-hand threading ensures uniform stress distribution and superior pull-out resistance in thin-gauge materials. The standard 82° countersink angle allows for flush mounting in panels and enclosures, while the Phillips drive system provides reliable torque transfer during high-volume assembly operations. These engineering features make these Type A tapping screws ideal for HVAC systems, electrical enclosures, automotive components, and industrial machinery where vibration resistance and environmental durability are critical requirements.

Specification Summary & Compliance

This No. 10-12 x 3-1/2" tapping screw features precise dimensional specifications including 0.19" thread diameter, 12 threads per inch, 0.362" head diameter, and standard Class 2A thread tolerances. Manufactured as a Type A thread forming screw with right-hand threading and fully threaded shank, it's designed for use with No. 21 drill bit (0.159" diameter). The fastener complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in various industrial applications.