Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number TB 49 found under Wrench Assembly by Ingersoll Dresser Pump Co. The National Stock Number assigned to this part is 5120001690008, and the Federal Supply Class is 5120 Hand Tools Nonedged Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like TB 49.