Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number JSB28 found under Hose Radiator Outle by Baker Instrument Company. The National Stock Number assigned to this part is 4720008516997, 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 JSB28.