Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number EM2.5MM 300 found under Headset Electrical by Acterna Llc. The National Stock Number assigned to this part is 5965015878263, 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 EM2.5MM 300.