BS ISO 2903:2016规定了公制梯形螺纹的公差系统，符合 ISO 2902。公差指符合ISO 2901的设计轮廓。公差系统不适用于轴向有特殊要求的梯形螺纹 位移，例如，机床引线和进给螺钉和螺母。交叉引用:ISO 965-1ISO 2901ISO 2902ISO 5408购买本文件时可获得的所有现行修订均包含在购买本文件中。

BS ISO 2903:2016 specifies a tolerance system for metric trapezoidal screw threads in accordance with ISO 2902. The tolerances refer to the design profile in accordance with ISO 2901.The tolerance system does not apply to trapezoidal screw threads with special requirements on axial displacement, for example, machine tool lead and feed screws and nuts.Cross References:ISO 965-1ISO 2901ISO 2902ISO 5408All current amendments available at time of purchase are included with the purchase of this document.