chicago screw Male- famale screw

Two-Piece Design: The fastener is made up of two separate pieces - a threaded sleeve or post, and a matching screw or bolt.

Threaded Sleeve: The sleeve or barrel component has internal threads that the screw/bolt threads into. This sleeve is typically hollow.

Flange Design: The sleeve often has a flange or rim at one end to provide a larger surface area for securing the fastener.

Common Materials: Chicago screws are commonly made from brass, stainless steel, or other corrosion-resistant metals.

Applications:

Attaching name plates, signs, or other decorative elements

Assembling leather goods, books, or other items that need to be disassembled

Securing hinges, handles, or other hardware to furniture or cabinetry

Advantages:

Allows easy assembly and disassembly

Distributes stress across a larger area compared to a single screw

Aesthetic appeal in certain applications

Terminology: The terms "sex bolt" or "barrel nut" refer to the same two-piece Chicago screw design.