8-18 x 1/2 Phill Full Contour Truss Self Tapping Screw Type AB Fully Thread Zinc 1 5/8-5 The 1/4-20 x 5/8 Phillips

The 1/4-20 x 5/8 Phillips Flat Undercut Machine Screw Fully Threaded Zinc is a high-quality screw that is perfect for a variety of applications

Its hexagonal head provides ample grip for easy installation using a wrench or socket

Its split design provides a spring action

This lag screw is designed for use in wood applications and features a full thread design for increased holding power

and HVAC installation

8-18 x 1/2 Phill Full Contour Truss Self Tapping Screw Type AB Fully Thread Zinc 1 5/8-5 The 1/4-20 x 5/8 PhillipsThese 8 18 x 1 2" Phill Full Contour Truss Self Tapping Screw Type AB Fully Thread Zinc are designed for use in metal to metal applications. They have a sharp point that easily penetrates metal, and their full thread design provides maximum holding power. These screws are also zinc plated for corrosion resistance. They are ideal for use in a variety of applications, including framing, roofing, and siding.