Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M60-509 found under Insulator by Psiperipheral Support. The National Stock Number assigned to this part is 5970011401766, 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 M60-509.