This screw, part number 503584601, secures key components in your Insinkerator, General, Hoover, Eureka, Husqvarna, Bolens, MTD, Cub Cadet, Ryobi, Poulan Pro, or Shindaiwa Garbage Disposer, Humidifier, Vacuum Cleaner, Lawn Mower, Snowblower, String Trimmer, Leaf Blower, Edger, Hedge Trimmer, Chainsaw, Pole Pruner, or Driver.