Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4000-4004-336 found under Adapter Handset by Dcx Chol Enterprises Inc. The National Stock Number assigned to this part is 5965015783205, and the Federal Supply Class is 5965 Headsets Handsets Microphones And Speakers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4000-4004-336.