Cameo Replacement Thumbscrew and Nut for Propane Tank Cover Lid is a genuine replacement part, ideal for replacing the hardware on your propane tank lid assembly without having to replace the entire unit. Cameo replacement parts are durable and easy to use, and save you time and money. The lid assembly hardware includes two nuts and two bolts. Cameo Replacement Thumbscrew and Nut for Propane Tank Cover Lid is a genuine replacement part, ideal for replacing the hardware on your propane tank lid assembly without having to replace the entire unit.