| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a fastener system having straight walled driving surfaces that provides a reliable stick fit feature, while also improving stability of engagement between system components.SOLUTION: A fastener system includes: a fastener having a head and a shank; a driver 210 having a driver bit end; and an interference interface. The head has a protrusion 211 extended to an axial outer side, and the driver bit end is a recessed socket, and the recessed socket has a plurality of driver straight side portions. The recessed socket receives the protrusion of the head, the interference interface includes a fastener interference contour and a driver interference contour, and the fastener interference contour is inwardly tapered toward a tip of the protrusion of the head, and the driver interference contour is inwardly tapered. The driver interference contour and the fastener interference contour form frictional matched engagement when the protrusion of the head of the fastener and the recessed socket are in the matched engagement.</p> |
