Hello!
I am in the process of installing expansion bolts in the concrete slab of the house to attach a wall. But I'm wondering how to proceed when driving the expansion bolts into the concrete to avoid damaging the threads.
The top of the expansion bolt is conical and therefore lacks threads at the top.
Should you hit the top or should you screw up the nut as much as possible and then hit it?
Grateful for answers!
Best regards,
Tobias
I am in the process of installing expansion bolts in the concrete slab of the house to attach a wall. But I'm wondering how to proceed when driving the expansion bolts into the concrete to avoid damaging the threads.
The top of the expansion bolt is conical and therefore lacks threads at the top.
Should you hit the top or should you screw up the nut as much as possible and then hit it?
Grateful for answers!
Best regards,
Tobias
It doesn't take much to knock them down, so it should be fine either way if you're a little careful.
Hello Blomman!
Agree with cheetah that it doesn't take much to knock them down.
Just the right drill dimension and the right drill depth.
But don't knock on the nut.
Best regards, Johan
Agree with cheetah that it doesn't take much to knock them down.
Just the right drill dimension and the right drill depth.
But don't knock on the nut.
Best regards, Johan
One trick is to screw on the nut first before tapping down the bolt. If the threading gets slightly damaged when hitting the bolt, it will be fixed when unscrewing the nut, as it restores the threads (the same method is practical to use when cutting off a bolt and wanting to fix the threads at the cut end).