Water Heater Screw-In Element; Watt Density Classification: HWD, Input Voltage: 240V, Wattage at 240V: 3800W, Watt Density at 240V: 177W/sq. in, Non-Resistored, Configuration: Straight, Outer Sheath Material: Copper (with plating), Element Diameter: 0.260", Mounting Type: Threaded, Element Length(flange to tip): 13.44", Actual Thread Size(outside diameter): 1-9/32", Nominal Thread Size: 1", Threads Per Inch: 11.5, Thread Type Series Designation: NPSM, Hex Head Size(across flats): 1-1/2", Origin: Unknown, ***Includes Gaskets