McMaster 4627K334 Medium Pressure Iron Pipe Fitting, Plug with External Square Drive, 3 4 NPT 1XPX6 13 16" Deep Well Socket 13 16" Deep Well Socket 76 in Weight 1 Pressure Rating Medium Pressure Shape Cap and Plug Drive Style External Square Fitting Type Plug Fitting Connection NPT Male Pipe Size 3 4 Construction Solid Pressure Class 300 Body Shape Square Material Iron Maximum Pressure @ Temperature 400 psi @ 72° F Maximum Steam Pressure @ Temperature 300 psi @ 550° F Certification UL Listed Connects To Pipe Class 300 Material Steel For Pipe Material Steel For Pipe Schedule 80 For Use With Air –Mexico–Canada Agreement (USMCA) Qualifying Yes