1/4 M style MNPT plugs are the industry standard style plugs. These steel plugs have a 1/4 basic flow size, maximum air flow of 40 SCFM and a maximum inlet pressure of 300 PSI. Product Features:1/4 male national pipe threadMaximum inlet pressure of 300 pounds per square inchMaximum air flow of 40 standard cubic feet per minuteMaximum temperature of 250 degrees Fahrenheit
