There is a bar used for tightening attached to the top
A threaded closure for openings in the body and/or end(s) of a metal shipping barrel or drum.
Classification: Other fittings nesoi of iron or nonalloy steel
NSN 5960-00-234-5961
NSN 5965-00-785-5100
NSN 6610-00-582-1107
NSN 5835-00-217-2147
NSN 6130-01-269-2084
NSN 5910-00-887-1298
NSN 6650-01-534-2769
NSN 5998-01-257-4726
NSN 6110-01-613-5057
NSN 6105-00-248-5772
NSN 5930-01-599-7877
NSN 5855-00-532-0025