Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number E-83050-10 found under Spectrometer Diffraction Grating by Cole Parmer Instrument Co. The National Stock Number assigned to this part is 6650014630915, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like E-83050-10.