Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 785 4320 001 found under Adapter Straight Tube To Boss by Rockwell Collins Inc. The National Stock Number assigned to this part is 4730001262824, and the Federal Supply Class is 4730 Hose Pipe Tube Lubrication And Railing Fittings. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 785 4320 001.