Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NE6C487-500KC found under Crystal Unit Quartz by Nel Frequency Controls Inc. The National Stock Number assigned to this part is 5955000532729, and the Federal Supply Class is 5955 Oscillators And Piezoelectric Crystals. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NE6C487-500KC.