Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 5770R found under Ring Nut Tube Coupl by Gulf And Western Industries Inc. The National Stock Number assigned to this part is 4730016184203, 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 5770R.