and other surface configurations will be apparent to the skilled person fig4 a illustrates a plurality of circumferentially spaced apart linear grooves 13 a each aligned with la formed in the pattern of gear teeth e g formed by cutting away or broaching the interior bore surface 44 a the resilient hose material will fully or partially fill these grooves 13 a when the tube is expanded outwardly and this further engagement via the filled grooves will increase the resistance to rotation of the hose with respect to the coupler assembly and increase the pull off strength of the hose and coupler assembly e g when a user pulls on one end of the hose exerting a force in direction la fig4 b illustrates an alternative design with an internal thread 13 b cut into the bore 44 b of the nut 12 b fig4 c illustrates yet another example with internal undercuts 13 c formed in the bore 44 c of the nut 12 c at spaced apart locations along la in accordance with a first method embodiment of the invention the nut and tube is affixed to the end portion of the hose as illustrated in the steps shown in fig1 3 accordingly a method of attaching a male hose coupler assembly to a first end portion of a hose is provided the first end portion of the hose having an exterior surface and an inner diameter surface.