These pickguard screws look better in person than they do in the listing photos. The black coating is impeccable. No light spots, no uncoated spots. They are solid black all the way inside the phillips head socket. The rounded top prevents reflections. The screws are almost a half inch long: they are 0.472 from tip to crown. The head diameter is between .225 and .235 inches (just under 6mm). The threaded shank is indeed 3mm (.120) major diameter (the minor diameter seems to be about 2mm (.086)). The countersink angle on the bottom of the screwhead seems to be 120 degrees. These screws are great.
Rating: [5 of 5 Stars!]