Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 47B MLB 611-020 found under Fender Marine by Gilman Corporation The. The National Stock Number assigned to this part is 2040014587952, and the Federal Supply Class is 2040 Marine Hardware And Hull Items. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 47B MLB 611-020.