4-40 x 5/16 Phillips Flat 100º Machine Screw Fully Threaded Zinc A563D The screw has a 3/8-16

The screw has a 3/8-16 thread size and a 1 3/4-inch length

The nut has a standard pattern hex shape for easy installation and removal with a wrench

The 1/4-20 thread size means that it has 20 threads per inch and a diameter of 1/4 inch

which means that it can be tightened in either direction to lock it in place

It is made of durable zinc yellow material and features a nylon insert that helps to prevent loosening

4-40 x 5/16 Phillips Flat 100º Machine Screw Fully Threaded Zinc A563D The screw has a 3/8-16The 4 40 x 5 16 Phillips Flat 100 Machine Screw Fully Threaded Zinc is a type of screw that is used in a variety of applications. It is made of zinc plated steel and has a Phillips flat head. The screw is fully threaded, meaning that it has threads along its entire length. This type of screw is often used in applications where a strong hold is required. The 100 angle of the head allows for easy driving and removal.