Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 41B72S found under Boring Drilling Milling Machine by Lucas Machine Div Of. The National Stock Number assigned to this part is 3411009539987, and the Federal Supply Class is 3411 Boring Machines. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 41B72S.