Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SL70 found under Loudspeaker Permane by 3M Company. The National Stock Number assigned to this part is 5965001635113, 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 SL70.