6 Dowels, completely or for the most part of metal, which are also completely or partly coated with a thermoplastic plastic, contain a thermoplastic plastic, are provided with a thermoplastic plastic or can be provided with a thermoplastic plastic; dowels, entirely or for the most part of metal, for vehicles, particularly for land vehicles, boats and aircraft; liquifiable or partly liquifiable dowels, completely or for the most part of metal, which are also completely or partly coated with a thermoplastic plastic, contain a thermoplastic plastic, are provided with a thermoplastic plastic or can be provided with a thermoplastic plastic; liquifiable or partially liquifiable dowels, entirely or for the most part of metal, for vehicles, particularly for land vehicles, boats and aircraft; fastening rods, entirely or for the most part of metal, particularly fastening rods entirely or partly coated with thermoplastics, containing thermoplastics, fitted with thermoplastics or capable of fitting with thermoplastics; fastening rods, entirely or for the most part of metal, for vehicles, particularly for land vehicles, boats and aircraft; fastening elements in the nature of rods, bolts, nuts, rivets, clips, hinges, entirely or for the most part of metal, particularly fastening elements in the nature of rods, bolts, nuts, rivets, clips, hinges, that are entirely or partly coated with thermoplastics, that contain thermoplastics, that are fitted with thermoplastics or that can be fitted with thermoplastics; fastening elements in the nature of rods, bolts, nuts, rivets, clips, hinges, that are entirely or for the most part of metal, for vehicles, particularly for land vehicles, boats and aircraft; mechanical contact elements for fastening, entirely or for the most of metal, particularly mechanical contact elements entirely or partly coated with thermoplastics, containing thermoplastics, fitted with thermoplastics or capable of fitting with thermoplastics, namely, rods, bolts, nuts, rivets, clips, hinges, metal plates, particularly for a positive connection with one or more than one thermoplastic component; mechanical contact elements for fastening, entirely or for the most of metal, for land vehicles, boats and aircraft, particularly for joining objects mechanically, namely, rods, bolts, nuts, rivets, clips, hinges; fastening elements, entirely or for the most part of metal, that are entirely or partly coated with thermoplastics, that contain thermoplastics, that are fitted with thermoplastics or that can be fitted with thermoplastics, namely, rods, bolts, nuts, rivets, clips, hinges; fastening elements, entirely or for the most part of metal, for vehicles, particularly for land vehicles, boats and aircraft, namely, rods, bolts, nuts, rivets, clips, hinges; anchors, entirely or for the most part of metal, particularly anchors that are entirely or partly coated with thermoplastics, that contain thermoplastics, that are fitted with thermoplastics or that can be fitted with thermoplastics; anchors, entirely or for the most part of metal, for the connection of objects onto land vehicles, boats and aircraft; screws, entirely or for the most part of metal, particularly screws that are entirely or partly coated with thermoplastics, that contain thermoplastics, that are fitted with thermoplastics or that can be fitted with thermoplastics; screws, entirely or for the most of metal, for land vehicles, boats and aircraft