Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number GS70009L12 found under Oscillator Crystal by American Telephone And Telegraph Co. The National Stock Number assigned to this part is 5963011388680, and the Federal Supply Class is 5963 Electronic Modules. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like GS70009L12.