Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number IB24 found under Level And Plumb by Johnson Level And Tool Mfg Co Inc. The National Stock Number assigned to this part is 5210013650065, and the Federal Supply Class is 5210 Measuring Tools Craftsmens. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like IB24.