本文件规定了拖车牵引车框架（横梁、牵引梁或安装支架）上U形夹联轴器的安装和互换性所需的特性。 本文件适用于连接挂车的U形夹联轴器，挂车的牵引杆上装有牵引环。 未规定的特性由部件制造商自行决定。交叉引用:ISO 12357ISO 8718ISO 1102ISO 8755ISO 11407ISO 11406购买本文件时提供的所有当前修订版均包含在购买本文件中。

This document specifies the characteristics necessary for the mounting and interchangeability of clevis couplings on the frame (cross member, drawbeam or mounting bracket) of towing vehicles for trailers. This document is applicable to clevis couplings intended for connection to trailers equipped with a drawbar eye on the drawbar of the trailer. Characteristics not specified are left to the discretion of the component manufacturer.Cross References:ISO 12357ISO 8718ISO 1102ISO 8755ISO 11407ISO 11406All current amendments available at time of purchase are included with the purchase of this document.