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Passo 2
A correctly sized driver should “fill up” the screw head, utilizing both the full depth and width of the socket. Beginners commonly make the mistake of using a driver that’s too small. An undersized driver slips easily, damaging the screw head and making it difficult to turn afterward—even with a correctly-sized driver. This is known as a stripped screw. An oversized driver fits into the screw only shallowly, if at all.
Size Selection
  • A correctly sized driver should “fill up” the screw head, utilizing both the full depth and width of the socket.

  • Beginners commonly make the mistake of using a driver that’s too small. An undersized driver slips easily, damaging the screw head and making it difficult to turn afterward—even with a correctly-sized driver. This is known as a stripped screw.

  • An oversized driver fits into the screw only shallowly, if at all.

  • When you find a driver that fits about right, compare the next size up as well as the next size down before you proceed.

  • In general, use the largest driver size that fits snugly into the screw.

正しいサイズの選び方はネジ頭を”覆っている”ものです。ソケットの深さと幅どちらも十分に詰まっています。

初心者に共通する失敗が小さすぎるドライバーを使ってしまうことです。小さいサイズのドライバーを使用するとスリップしてしまい、ネジ頭にダメージを与えてしまいます。最後にはネジを回すことができなくなります。これは潰れたネジと言われています。

オーバーサイズのドライバーはネジに対して先端のみしか装着できません。

正しいサイズのドライバーを選んでいるか迷うときは、作業前に1サイズ大きいドライバーと1サイズ小さいものを装着してみて、フィット感を確認してください。

通常は大きめのサイズのドライバー使用する方が、ネジに装着しやすいです。

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