PG螺纹标准

.Pg螺纹种类大径螺距每英寸牙数中径小径牙型高度钻孔直径基本尺寸mmmmmm型号tpid1H1mm编号d=Dpd2=D2Pg7Pg12.501.2702011.8911.280.6111.40Pg9P