With all this talk of the world’s smallest snowman, I’ve decided to show you a few of the electron micrographs that I’ve taken of a #2-56 machine screw.
A few weeks ago, to better familiarize myself with a new scanning electron microscope, I had decided to take a look at a machine screw before moving to the specimens of interest. The head off the screw was sheared off with a very dull pair of side cutting pliers.
Please bear in mind that these images were only taken as quick practice and have been cropped and slightly compressed for web viewing.
Single Thread Closeup – Notice the Coating Defect
Closeup of Coating Defect (50,000X Magnification)
Closeup of Sheared Screw Head
Closeup of Rougher Section of Scraped Surface