4-40 x 1/4 MS51959, NASM51959 Phil Flat Machine Screw Full Thread 300 Series S/S DFAR D692310Y It is designed to fit

It is designed to fit a #2 screw or bolt

and a slotted indented hex washer head for easy installation with a hex key or screwdriver

These 12-24 x 1 1/4" self-drilling hex washer head machine screws are made of steel and have a zinc plating for corrosion resistance

or wood to wood

4-40 x 1/4 MS51959, NASM51959 Phil Flat Machine Screw Full Thread 300 Series S/S DFAR D692310Y It is designed to fit4 40 x 1 4 MS51959, NASM51959 Phil Flat Machine Screw Full Thread 300 Series S S DFAR is a type of screw that is used in a variety of applications. It is made of 300 series stainless steel, which is a corrosion resistant material. The screw has a full thread, which means that the threads extend the entire length of the screw. It also has a flat head, which means that the head is flat and does not have a raised edge. The screw is compliant with the