Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 44C0579-4 found under Insulator Standoff by Siemens Energy And Automation Inc. The National Stock Number assigned to this part is 5970011501953, 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 44C0579-4.