6 dowels, completely or for the most part of metal, which are also completely or in part 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 largely metal, for vehicles, particularly agricultural vehicles, marine vessels, and aircraft; liquefiable or partly liquefiable dowels, completely or for the most part of metal, which are also completely or in part coated with a thermoplastic plastic, contain a thermoplastic plastic, are provided with a thermoplastic plastic, or can be provided with a thermoplastic plastic; liquefiable or partially liquefiable dowels, completely or for the most part metal, for vehicles, particularly for agricultural vehicles, marine vessels, and aircraft; structural connection pins, completely or for the most part of metal, which are also completely or in part coated with a thermoplastic plastic, contain a thermoplastic plastic, are provided with a thermoplastic plastic, or can be provided with a thermoplastic plastic; structural connection pins, entirely or largely metal, for use on vehicles, particularly agricultural vehicles, marine vessels, and aircraft; joining elements, comprised entirely or in significant part of metal, which are also entirely or in part coated with thermoplastics, contain thermoplastics, are fitted with thermoplastics, or may be fitted with thermoplastics, namely, metal pipe joints, metal rivets; joining elements comprised entirely or in significant part of metal namely, metal pipe joints and metal rivets for use on vehicles, particularly agricultural vehicles, marine vessels, and aircraft; mechanical contact elements comprised entirely or in significant part of metal, and which are entirely or in part coated with thermoplastics, contain thermoplastics, are fitted with thermoplastics or may be fitted with thermoplastics, namely, rods, screws, nuts, tubes and bolts; mechanical contact elements for the mechanical connection of objects and comprised entirely or in significant part of metal, namely rods, screws, nuts, tubes and bolts for use on vehicles, particularly agricultural vehicles, marine vessels, and aircraft; fastening elements comprised entirely or in significant part of metal, which are also entirely or in part coated with thermoplastics, contain thermoplastics, are fitted with thermoplastics, or may be fitted with thermoplastics; fastening elements, comprised entirely or in significant part of metal, for use on vehicles, particularly agricultural vehicles, marine vessels, and aircraft; anchors comprised entirely or in significant part of metal, and which are entirely or in part coated with thermoplastics, contain thermoplastics, are fitted with thermoplastics, or may be fitted with thermoplastics; anchors, comprised entirely or in significant part of metal, for the connection of objects onto vehicles, particularly agricultural vehicles, marine vessels, and aircraft; screws comprised entirely or in significant part of metal, and which are entirely or in part coated with thermoplastics, contain thermoplastics, are fitted with thermoplastics, or that may be fitted with thermoplastics; screws, entirely or largely metal, for vehicles, particularly agricultural vehicles, marine vessels, and aircraft; die-cast parts comprised of aluminum or magnesium alloy with a flange, pin, or similar connection element, namely, housings for electronic or electric controller and devices, machine housings, gear boxes and structural joining elements in cars for engine fixation, dash board, rivets, sheet metal connectors