Machined threads provide a strong positive seal, the tapered interior dome easily drives the bushing into the connector bodyLubricated neoprene bushing compresses easily for a liquidtight seal and added pull-out protectionPatented GOTCHA® ring incorporates a split hinge design to prevent friction and provide strain relief, also color-coded for sizing identificationBrown color code1.36 to 1.41 in recommended knockout hole0.7 in thread length1.01 in Dia throatF4 form sizeHubbell's nylon cord connectors resist most common industrial corrosive and provide effective pullout protection in a lightweight designThey are ideal for any application where weight, conductivity or corrosion may be an issueNEMA 4/4X/12/13 enclosure