Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 452-020-001-000 found under Holder Handset by Roanwell Corporation. The National Stock Number assigned to this part is 5965000787615, 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 452-020-001-000.