Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 12 617 9 found under Plug Machine Thread by Atlas Polar Company Limited. The National Stock Number assigned to this part is 5365012195863, 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 12 617 9.