Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W6100 1-4D found under Valve Plug by Meggitt North Hollywood Inc. The National Stock Number assigned to this part is 4820006399344, 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 W6100 1-4D.