Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M55310 09 B11A10MHZ found under Oscillator Crystal by Vectron International Inc. The National Stock Number assigned to this part is 5955011380737, 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 M55310 09 B11A10MHZ.