Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4TYZ4 found under Contactor Magnetic by Grainger Div Of W W Grainger Inc. The National Stock Number assigned to this part is 6110015853744, and the Federal Supply Class is 6110 Electrical Control Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4TYZ4.