Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3INX3 4INNIPPLE found under Nipple Electrical Conduit by Porter H K Co Inc Electrical Div. The National Stock Number assigned to this part is 5975000625907, 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 3INX3 4INNIPPLE.