Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 6140040-801 found under Oscillator Noncryst by Viking Technologies Ltd. The National Stock Number assigned to this part is 5955012956870, 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 6140040-801.