In the world of binding and fastening, there is a quiet workhorse that combines the permanence of a rivet with the flexibility of a screw. Whether you are an archivist preserving legal ledgers, a leather crafter making a custom wallet, or a restaurant owner updating a wine list, you have likely held one of these devices in your hand: the **Chicago Screw**.

Chicago screws (also known as **binding posts**, **accounting screws**, or **sex bolts**) are two-part fasteners widely used in leatherworking, bookbinding, and industrial applications. Unlike traditional rivets or nuts and bolts, they offer **reusability**, **clean aesthetics**, and **easy assembly**