Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 979-1A188 found under Insulator Bushing by Gap Instrument Corp. The National Stock Number assigned to this part is 5970003304502, 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 979-1A188.