S-90161A559 Length 4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with blue protective coating for extended service life in harsh environments
• Exceptional holding power with 190 lbs pull-out and 225 lbs shear strength for reliable anchoring
• Optimized installation control through external hex/slotted drive design for secure fastening
• Proven concrete performance tested in 3,000 psi concrete with 1" minimum embedment depth
• Versatile material compatibility designed for concrete, brick, and block applications
• Easy removal capability as a removable anchor for temporary installations or adjustments
• Precise installation guidance with recommended 3/16" drill bit for proper hole sizing

Professional Applications & Engineering Value

These blue corrosion-resistant coated steel tapping screws deliver exceptional performance in demanding masonry applications. The 1/4" diameter with 1 5/8" thread length and pointed tip ensures quick starting and efficient installation in concrete, brick, and block substrates. The external hex/slotted drive provides superior torque transmission during installation, preventing cam-out and ensuring proper seating. Engineered to withstand 190 lbs pull-out and 225 lbs shear forces, these screws offer reliable anchoring for structural applications, mechanical equipment mounting, and commercial construction projects where vibration resistance and long-term stability are critical.

Specification Summary & Compliance

This 1/4" x 4" tapping screw features right-hand threads with standard inch measurements and a hex head configuration (3/16" height, 5/16" width). The blue corrosion-resistant coating on steel substrate provides enhanced durability, while the pointed tip facilitates easy insertion. Manufactured to industry standards for concrete anchor screws, it requires a 3/16" drill bit (0.1875" diameter) and achieves optimal performance with 1" minimum installation depth in 3,000 psi concrete applications. Complies with standard industrial specifications for removable anchor systems in masonry fastening applications.