航空航天 UNJ螺纹 一般要求和极限尺寸

[中文适用范围]： 本标准规定了航空航天结构用英制系列控制根半径UNJ螺纹的一般要求和极限尺寸。 它确定了此类螺纹的基本三角形轮廓，并提供了用于指定直径和每英寸螺纹数量组合的系统。 对于 0,060 英寸（1,524 毫米）至 6,000 英寸（152.4 毫米）的所有直径，它以表格的形式提供了选择直径和每英寸螺纹数组合的基本尺寸和公差。 它还提供了表中未给出的任何直径和每英寸螺纹数组合的尺寸和公差的计算方法，包括直径超过 6,000 英寸的螺纹。 [外文原描述]： This International Standard specifies the general requirements and limit dimensions of inch series UNJ threads with controlled root radius for aerospace construction. It determines the basic triangular profile for this type of thread and gives a system for designating the diameter and number of threads per inch combinations. For all diameters 0,060 in (1,524 mm) to 6,000 in (152,4 mm), it offers in the form of tables the basic dimensions and tolerances for a selection of diameter and number of threads per inch combinations. It also provides the method of calculation for the dimensions and tolerances for any diameter and number of threads per inch combination not given in the tables, including threads with a diameter in excess of 6,000 in.