Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number F3D10161 ITEM 4 found under Spacer Sleeve by Vacco Industries. The National Stock Number assigned to this part is 5365014206096, 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 F3D10161 ITEM 4.