4 inch NPT class 300 malleable iron full coupling

Material: malleable iron (i.e. black iron) per ASTM A197, Dimensions: per ASME B16.3, NPT Thread: per ASME B1.20.1, Class: 300, Nominal Pipe Size: 4 inch, Coupling length: 4.69 inch, Outside Diameter (Min): 5.67 inch, Inside Diameter (Min/Max): 4.50/4.60 inch, Internal Thread Length (Min.): 1.38 inch, Nominal Metal Thickness: 0.39 inch, Approximate Weight: 11.2 LBS

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