I would like to share a program (journal in C#) I have written for creating 2d metric fasteners. This will be very handy for anyone creating a quick 2d layout or concept drawing. It can be used to create socket head cap screws, socket head countersunk screws, socket head shoulder screws and tapped holes. There is option of creating plan view or section(front) view. The program draws the right length of standard screw adjusting the counterbore depth by measuring the distance between selected lines.
All details about how to use it and further customise it to your needs is in the ReadMe.txt file.