Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SH681-6 (900 MM found under Hose Nonmetallic by Eaton Aeroquip Inc. The National Stock Number assigned to this part is 4720016239919, 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 SH681-6 (900 MM.