Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ACG 045N5 NTBP 540 found under Ball Check by Imo Industries Inc. The National Stock Number assigned to this part is 4820014188900, and the Federal Supply Class is 4820 Valves Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like ACG 045N5 NTBP 540.