Cord Connectors - Hubbell has the broadest line and the widest choice of materials in the industry. NPT hub sizes from " to 3" in straight male end, 90, 45, female and underground feed connectors. They are available in your choice of aluminum, plated steel, nylon and stainless steel. The zinc-plated steel cord connectors offers the strength of steel and the corrosion resistance of zinc-plating. These heavy-duty connectors hold up to most manufacturing chemicals including acid solutions, solvents and other corrosive materials. Their machined steel nut and body allows for tightening the compression nut and NPT hub without worrying about stripping the threads. For larger size cord, NPT hub sizes 1" to 2", Hubbell utilizes malleable iron connectors which provide excellent holding and Liquidtight performance. Hubbells nylon cord connectors resist most common industrial corrosives and provide highly effective pullout protection in a lightweight design. They are ideal for any application where weight, conductivity or corrosion may be an issue. Theyre available in NPT hub sizes from " to 1". Stainless steel cord connectors provide superior strength and corrosion resistance for industrial and military applications. They are machined from 300 series stainless steel and come in " to 1", NPT hub sizes.