S-90161A855 Length 3 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with blue acrylic coated steel construction for extended service life in demanding environments
• Enhanced installation security through Torx drive design that prevents cam-out and ensures proper torque application
• Maximum holding power with 190 lbs pull-out and 225 lbs shear strength tested in 3,000 psi concrete
• Quick and secure fastening featuring pointed tip and right-hand threads for efficient penetration into masonry materials
• Precision installation with 82° countersink angle allowing for flush mounting in concrete, brick, and block applications
• Reliable performance backed by RoHS 3 and REACH compliance for industrial safety and environmental standards
• Optimized compatibility with standard 3/16" drill bits for straightforward installation without specialized tools

Professional Applications & Engineering Value

These blue acrylic coated steel tapping screws deliver exceptional performance in concrete, brick, and block applications where corrosion resistance and structural integrity are paramount. The Torx drive flat head configuration provides superior torque transmission during installation, eliminating stripping issues common with Phillips drives. Engineered with a pointed tip and right-hand threads, these screws create their own mating threads in masonry substrates, eliminating the need for separate anchors. The blue acrylic coating offers enhanced protection against moisture and chemical exposure in industrial environments, while the 82° countersink ensures flush mounting for clean, professional finishes. These concrete screws are specifically designed to withstand the rigors of heavy-duty construction and industrial maintenance applications.

Specification Summary & Compliance

This 1/4" diameter tapping screw features standard inch measurements with a thread length of 1-5/8" and overall length of 3-1/4". The flat head design incorporates a standard profile with 82° countersink angle for proper seating in masonry materials. Manufactured to precise dimensional standards, these screws demonstrate verified performance with 190 lbs pull-out strength and 225 lbs shear strength when tested in 3,000 psi concrete. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industrial compliance standards are met for professional applications.