S-90161A831 Length 3 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with blue protective coating extends service life in demanding concrete, brick, and block environments
• High-strength anchoring performance with 150 lbs pull-out and 180 lbs shear strength tested in 3,000 psi concrete for reliable structural integrity
• Enhanced torque transmission through Torx drive design prevents cam-out and ensures secure installation
• Quick penetration and alignment with pointed tip design reduces installation time and effort
• Optimized thread engagement with 1 5/8" thread length provides maximum holding power in masonry materials
• Flush mounting capability with standard flat head profile creates smooth finished surfaces
• Precision installation guidance with recommended 5/32" drill bit size ensures proper hole preparation

Professional Applications & Engineering Value

These blue corrosion-resistant coated steel tapping screws are engineered specifically for concrete, brick, and block applications where durability and reliability are paramount. The combination of high-strength steel construction and specialized corrosion-resistant coating addresses common failure points in masonry fastening, particularly in environments exposed to moisture or chemical elements. The Torx drive system delivers superior torque transfer during installation, eliminating the stripping issues common with traditional drive types and ensuring consistent seating in dense materials. With tested performance in 3,000 psi concrete, these tapping screws provide engineers and contractors with predictable, repeatable results for structural anchoring, mechanical fastening, and equipment mounting applications across commercial and industrial construction projects.

Specification Summary & Compliance

Manufactured to precise dimensional standards with right-hand threads and standard flat head profile featuring 82° countersink angle. The 3/16" screw size with 1 5/8" thread length ensures proper engagement in accordance with industry installation guidelines. These tapping screws meet rigorous performance testing standards with verified 150 lbs pull-out strength and 180 lbs shear strength in 3,000 psi concrete substrates. Installation requires 5/32" drill bit (0.1563" diameter) with minimum 1" installation depth for optimal performance. Compliant with relevant industrial fastening specifications and quality assurance protocols for construction applications.