Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B2-1205 found under Hose Metallic by Marshall Engineered Products Co. The National Stock Number assigned to this part is 4720009727558, 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 B2-1205.