Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number R77-6 found under Plug Machine Thread by Lube Devices Inc. The National Stock Number assigned to this part is 5365013277117, 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 R77-6.