Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SML-20 found under by Comprehensive Video Supply Corp. The National Stock Number assigned to this part is 5965012988882, 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 SML-20.