4-40 x 1 1/4 Slotted Flat Machine Screw Fully Threaded Zinc D127B Its primary function is to

Its primary function is to distribute the load of a screw or bolt evenly over a surface

It is also 1 3/4 inches long

Made of high-quality steel

The truss head has a rounded top and a flat bottom

while the hex head allows for easy installation using a standard wrench or socket

4-40 x 1 1/4 Slotted Flat Machine Screw Fully Threaded Zinc D127B Its primary function is to4 40 x 1 1 4 Slotted Flat 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 slotted head. The screw is 1 1 4 inches long and has a diameter of 4 40. It is fully threaded, which means that the threads extend all the way to the head of the screw. This type of screw is often used in metalworking and other applications where a strong and durable fastener is needed.