Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 658 100000 008 found under Crystal Unit Quartz by Modcomp Inc. The National Stock Number assigned to this part is 5955010581366, 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 658 100000 008.