Male and Female Chicago Screws
Special Flat Hex Socket Head flat head Male and Female Chicago Screws and nut chicago screw.
The definition of a female screw is the internal, spiral thread of a nut. An example of a female screw is a nut in a nut and bolt combination. i.e, Female Screw.
A screw having threads upon its exterior which enter the grooves upon the inside of a corresponding nut or female screw is called Male Screw.
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