Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 111840 found under Handset by Itt Telecom Products Corp. The National Stock Number assigned to this part is 5965000046371, 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 111840.