S-90161A553 Length 2 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with blue protective coating for extended service life in demanding environments
• Exceptional holding power with 190 lbs pull-out and 225 lbs shear strength tested in 3,000 psi concrete
• Easy installation and removal with external hex/slotted drive design for quick fastening and disassembly
• Optimized thread engagement with 1-5/8" thread length for maximum anchoring performance in masonry materials
• Comprehensive material compatibility specifically engineered for concrete, brick, and block applications
• Precision drilling guidance with 3/16" drill bit compatibility for accurate hole preparation
• Reliable pointed tip design for easier starting and reduced installation effort

Professional Applications & Engineering Value

This blue corrosion-resistant coated steel tapping screw delivers exceptional engineering value for construction professionals working with concrete, brick, and block substrates. The specialized tapping screw design eliminates the need for separate anchors, providing direct thread-forming capability that creates strong, permanent threads in base materials. The external hex drive combined with slotted options offers versatile installation methods compatible with standard power tools, while the removable feature allows for adjustments and maintenance access without compromising structural integrity. Engineered specifically for 3,000 psi concrete applications, this fastener solves critical challenges in masonry fastening by providing reliable pull-out and shear strength in demanding construction environments where vibration, load stress, and environmental exposure are constant concerns.

Specification Summary & Compliance

This 1/4" diameter tapping screw features right-hand threading with a total length of 2-3/4" and thread length of 1-5/8". The hex head measures 5/16" across flats with 3/16" height, and flange diameter of 0.414". Manufactured to precise dimensional standards with Class 2A thread fit for consistent performance. The product is engineered for use with 3/16" drill bits and requires minimum 1" installation depth. Complies with industry standards for masonry and concrete fastening applications, with material composition meeting relevant industrial specifications for corrosion-resistant coated steel fasteners.