5PC ZoroSelect Malleable Iron Hex Locknut Class 150

5PC ZoroSelect Malleable Iron Hex Locknut Class 150 Locknut 1/2 in Nominal Pipe Size Class Class 150 Black Anodized Malleable Iron Female NPT 14 For Pipe Schedule 40 300 psi Maximum Operating Pressure 150 psi Max. Steam Pressure -20 Degrees to 366 Degrees F Black