Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SH249 found under Oscillator Noncrystal Controlled by Greenray Industries Inc. The National Stock Number assigned to this part is 5963001631573, 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 SH249.