This is a special to print custom button head cap screw we supply a long time customer on an annual basis at approximately 5,000 pieces - it measures M3 X 0.5 X 7.24MM.  They are supplied in increments of 5,000 pieces and are made in the United States using 302 stainless steel material with passivation as the final stage in the process.  Fine thread and a special to print point is incorporated in these parts, which resembles an oval point on a standard set screw.