并联和锥形管螺纹手用丝锥. 通用尺寸和标记

[中文适用范围]： 本文件 specifies the general dimensions and marking of hand taps. It is applicable to two types of pipe threads: - taps for parallel threads (see Figure 1 and Table 1), - taps for taper threads (see Figure 2 and Table 2), having threads in accordance with ISO 7-1 and ISO 228-1. [外文原描述]： ISO 2284:2017 specifies the general dimensions and marking of hand taps for pipe threads. It is applicable to the two following types of tap: - taps for parallel threads (see Figure 1 and Table 1), - taps for taper threads (see Figure 2 and Table 2), having threads in accordance with ISO 7‑1 and ISO 228‑1. Furthermore, it gives in Annex A the bases used for calculation of the dimensions, and in Annex B the relationship between designations in this document and the ISO 13399 series.