紧固件沉孔及通孔尺寸

紧固件通孔及沉孔尺寸

公称直径456810121416182022通孔直径 4.5 5.5 6.691113.515.517.5202224 J21-1外六角锪平1011131822263033364043锥头沉孔大径9.610.612.817.620.324.428.432.4-40.4-J21-9内六角沉孔直径810111518202426-33-J21-9内六角沉孔深 4.6 5.7 6.8911131517.5-21.5-

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