Connecticut! Shows the production and usefulness of aluminum screw-thread inserts. The screw-thread inserts are placed into drilled holes on brittle materials such as thin metals and plastics in order to securely fasten materials together. Shots of workers producing the “bushing” that is the insert with the help of precision gauge measures, women at advancing metal thread to create the coil or insert. CU of the mechanical lathe process of forming the coil and the screwing of the threaded insert onto a bolt. MS of a women repairing a stool by drilling holes into a round the bottom of the stool and then inserting the manufactured coils ensure stability.