Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CO4605-125.000-EXT-TR found under Oscillator Crystal by Raltron Electronics Corp. The National Stock Number assigned to this part is 5955016508161, 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 CO4605-125.000-EXT-TR.