Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M374 found under Crystal Unit Quartz by M Tron Industries Inc. The National Stock Number assigned to this part is 5955013238608, 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 M374.