Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 004 003656 350 found under Cover Barrel by National Oilwell Varco Inc. The National Stock Number assigned to this part is 3010007659074, and the Federal Supply Class is 3010 Torque Converters And Speed Changers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 004 003656 350.