Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SXK 107 3977 4 found under Switch Panel Msc2a by Harris Corp. The National Stock Number assigned to this part is 6110014779551, and the Federal Supply Class is 6110 Electrical Control Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SXK 107 3977 4.