S-90950A106 Length 1 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 410 stainless steel construction for long-lasting performance in demanding environments
• Exceptional holding power delivering 225 lbs shear strength and 190 lbs pull-out resistance in 3,000 psi concrete
• Optimized installation efficiency with standard 82° countersink angle for flush mounting and clean finished appearance
• Precise drilling compatibility using standard 3/16" drill bits for quick, accurate hole preparation
• Reliable removability allowing for maintenance access and component replacement when needed
• Environmental compliance assurance meeting RoHS 3 standards for safe, regulated manufacturing
• Versatile material compatibility engineered for concrete, brick, and block applications with 1-5/8" thread engagement

Professional Applications & Engineering Value

These 1/4" Phillips flat head tapping screws address critical challenges in masonry and concrete fastening applications. The 410 stainless steel composition provides essential corrosion resistance for both interior and exterior installations, while the pointed tip design facilitates easier starting and reduces installation torque requirements. The 1-5/8" thread length ensures maximum engagement in various substrate densities, from standard concrete blocks to high-density bricks. The right-hand thread configuration combined with the standard flat head profile creates secure, flush-mounted connections that withstand vibration and dynamic loads common in construction environments. These tapping screws eliminate the need for separate anchors in many applications, streamlining installation processes and reducing total project costs.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread tolerances for consistent performance. The flat head design features an 82° countersink angle compatible with standard tooling. These tapping screws are engineered for use with 3/16" drill bits (0.1875" diameter) and require 1" minimum installation depth. Fully compliant with RoHS 3 (2015/863/EU) regulations, ensuring environmental safety standards are met. The right-hand thread direction and removable design provide flexibility for maintenance and repair scenarios while maintaining structural integrity in concrete, brick, and block applications.