Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CS4720-00172A216R found under Hose Nonmetallic by Bf Goodrich Aerospace. The National Stock Number assigned to this part is 4720000182162, and the Federal Supply Class is 4720 Hose And Flexible Tubing. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CS4720-00172A216R.