Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 740AR found under Adapter Electrical by Porter H K Co Inc Electrical Div. The National Stock Number assigned to this part is 5975005868069, and the Federal Supply Class is 5975 Electrical Hardware And Supplies. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 740AR.