Machine Screws = 12/24 x 1/2 Flat Undercut Head.
We can sell you these screws as well.
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As I am not familiar with screws dimensions legend, I want to confirm the length, Dia as per below sketch. Kindly clarify the difference between machine screws wood screws.
The difference between wood and machine screws is the thread type in the intended application. A wood screw will be identical to the image you provided above with very loose and set widely apart thread type or as a machine screw is intended to be installed on to a metal door or metal frame and will have a very tight thread profile.