Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 399A65-1 found under Cock Poppet Drain by Le Bozec Filtration Et Systemes. The National Stock Number assigned to this part is 4820143659738, 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 399A65-1.