Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number N3613S found under Cock Poppet Drain by Haldex Brake Products Corporation. The National Stock Number assigned to this part is 4820014665578, 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 N3613S.