Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number V1E10521 found under Plug Machine Thread by Vacco Industries. The National Stock Number assigned to this part is 5365015012787, and the Federal Supply Class is 5365 Bushings Rings Shims And Spacers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like V1E10521.