钢丝螺套底孔一览表
螺纹规格（通用）钻头直径（ mm)螺纹规格(特殊)钻头直径（ mm) ST2x0.4 2.1ST8x18.3
ST2.5x0.45 2.6ST10x110.3
ST3x0.5 3.1ST10x1.2510.3
ST4x0.7 4.2ST12x1.2512.3
ST5x0.8 5.2ST12x1.512.4
ST6x1 6.3ST12x112.3
ST7x17.3ST13x1.2513.3
ST8x1.258.3ST14x1.514.4
ST10x1.510.4ST14x1.2514.3
ST11x1.511.4ST16x1.516.4
ST12x1.7512.4ST18x1.518.4
ST14x214.5ST20x1.520.4
ST16x216.5ST20x220.5
ST18x2.518.6ST22x222.5
ST20x2.520.6ST22x1.522.4