Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 54 ALT 0 ITEM 9 found under Handset by Hose Mccann Telephone Co Inc. The National Stock Number assigned to this part is 5965012747054, 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 54 ALT 0 ITEM 9.