3/4" FNPT Malleable Iron Hex Locknut Price For: Each Standards: UL: FM Approved: ASME B16.3 Fitting Schedule/Class: Class 150 Fitting Connection Type: FNPT Basic Fitting Material: Metal Basic Fitting Shape: Nut Item: Hex Locknut Pipe Fitting Material: Malleable Iron Specific Fitting Shape: Hex Locknut Temp. Range: Not For Pressure Service Max. Pressure: Remove all attribute data - not for pressure Saturated Steam Pressure: Remove all attribute data - not for pressure Pipe Size (Fittings): 3/4" Hex Size: 1-7/16" Country of Origin (subject to change): United States