Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 49-90-0040 found under Hose Nonmetallic by Milwaukee Electric Tool Corporation. The National Stock Number assigned to this part is 4720013523457, 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 49-90-0040.