Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AC42BA found under Carrier 81 Millimeter Mortar by Nc3a The Hague Ric Manager. The National Stock Number assigned to this part is 2350000710732, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AC42BA.