M4          7.5              4.5            4.5

        M5          9.0              5.5            5.5

        M6          10.5             6.5            6.5

        M8          13.5             8.5            8.5

        M10         16.5             10.5           10.5

        M12         18.5             12.5           12.5

常用螺絲規格：

        規格     沉頭孔直徑      沉頭孔深度     過孔直徑

        M2          3.8              3.0            2.5