Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RM52LH4367-054 found under Nut Self Locking Single Ball Sea by Harvard Industries Inc. The National Stock Number assigned to this part is 5310001373036, and the Federal Supply Class is 5310 Nuts And Washers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like RM52LH4367-054.