4-40 x 1/4 Phillips Flat Undercut Thread Cutting Screw Type 1 Fully Threaded Zinc M3.5 which means that it does

which means that it does not have any teeth on its surface

These 8-15 x 2 1/2 Square Pan Self Tapping Screw Type A Fully Threaded Zinc are designed for use in a variety of applications

The screw is 3/8 inch long and has a diameter of 3-48

Ideal for use in marine environments

This 2-64 x 3/16 x 1/16 Fine Thread Hex Machine Screw Nut is made of durable zinc and is designed to fit 2-64 fine thread machine screws

4-40 x 1/4 Phillips Flat Undercut Thread Cutting Screw Type 1 Fully Threaded Zinc M3.5 which means that it doesThe 4 40 x 1 4 Phillips Flat Undercut Thread Cutting Screw Type 1 Fully Threaded Zinc is a small, versatile screw that is commonly used in a variety of applications. It is made of zinc plated steel, which provides excellent corrosion resistance. The screw has a Phillips drive, which makes it easy to install and remove. The flat undercut head sits flush with the surface of the material, making it ideal for applications where a low profile is desired.