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Introduction

平らなカウンターサンク六角ボルトは潰れ、六角レンチでは回せなくなりました。凹んだボルトはプライヤでは握ることはできません。太いボルトだったので穴を開けるのは非常に困難でした。

Parts

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  1. ネジ頭をスロット状に切ります。
    • ネジ頭をスロット状に切ります。

    • マイナスドライバーをスロットに入れ、反時計回りにハンマーで軽く叩きボルトを緩めます。

    • ドライバーでボルトを外します。

Finish Line

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Wolfgang

Member since: 02/17/2012

567 Reputation

2 Guides authored

6 Comments

Use the same technique for Philips or crosshead screws.

Use a grinding / cutting disk, not a saw blade. Apply the rotating cutting disk gently, do not force or it will break.

If this is a toughened steel or stainless steel bolt (much tougher), it will be best to use a reinforced cutting disk.

Use a dusk mask to avoid breathing the dusk from the disk !

(No, I don't usually, but I should !)

Frank B - Reply

While this works it is very difficult to not ruin the material around the bolt.

What I do is use a torx bit. size one up that is slightly larger then the hole and then firmly tap it in. atttach your drive handle a turn slowly while pushing down. this will normally break it free.

Also before your get to this point try putting your allen key in the hole and smack it with a hammer. sometimes the force of the hit will cause the metal to "break" enough that the allen screw wont strip.

Jamie Mcguire -

There are also specifically designed screw extractors made for this. These tools are generally two-sided: one side is used to drill the hole, while the other is inserted to extract. If the process works, the surrounding area is undamaged.

Karl Kaufmann - Reply

Use another Allen bolt to weld over it and then you can easily remove the Allen bolt with the help of Allen key

Tushar Pednekar - Reply

And if for any reason if you can't weld then just drill the head of the Allen bolt so it's shears off. And then u can easily remove the rest

Tushar Pednekar - Reply

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