Hex Jack Screws are available in zinc or yellow zinc finish and also comes in stainless steel. All Jack Screws come in a size of 3/16 "around the head flats and with a 4-40 thread. They are widely used in computer applications, similar to standoffs but with a longer protruding thread.
![Hex Jack Screw (AF) Male/Female, 4-40 x 7/16", Steel, Zinc Plated (250/Pkg.) Hex Jack Screw (AF) Male/Female, 4-40 x 7/16", Steel, Zinc Plated (250/Pkg.)](https://cdn11.bigcommerce.com/s-gdy1ehz/images/stencil/500x659/products/225347/320442/SDG450XS_500x500_View1__99296.1591427762.jpg?c=2)
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