Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K-5186 found under Tubing Nonmetallic by C And D Batteries. The National Stock Number assigned to this part is 4720011231265, 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 K-5186.