Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K3994779G1 found under Insulator Bushing by Ngk Locke Inc. The National Stock Number assigned to this part is 5970004074721, and the Federal Supply Class is 5970 Electrical Insulators And Insulating Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like K3994779G1.