Welcome back to Albany County Fasteners - Fasteners 101
I'm Bob and today we're going to demonstrate how to
install and remove a one-way tamper-proof screw,
sheet metal, in wood.
I have a one-way here, a flat head screwdriver, and
we're going to install this one way with this Flathead screwdriver.
Then I'm going to show you how to remove it.
We're going to try to remove it with a vice grip.
We're also going to use an extractor.
It's always a problem, getting these started, but once you get them started they go right in.
Almost started here. You gotta apply consistent pressure until it gets going
and it starts to draw itself in like it's doing now.
You have to use a very large flat-head screwdriver as you can see I'm using here.
Can't use a small one, it'll just slip out.
This particular screw is stainless steel.
You can also use some wax if you want on the screw to make it easier for it to go in.
I should have done that as I'm struggling here a little bit.
The thing about this is that...
you can't back it off because once it's in, it's in. The only way to get it off...
would be one of these.
At least I can grab it right now. I'm going to turn it to take it off.
Then I'm going to put another one in .
You also could pre-drill a hole if you want to.
Vice grips just about works on anything.
So if you can grab the head you can remove a one-way.
I'm going to drive it in one more time. This is a new screw.
Now I'm just going to take a little lube...
This is drill lube, because I don't really care about my surface here.
Not that that's going to make a real difference, you can see how much easier that screw is going in now.
Almost there.
So the one way is all the way in now. It's flush up against the wood.
So the question is: How would you remove it?
Let's see if a vice grip will work. You can get on it with a vice grip...
...and I'm not having much success.
So the vice grip will not remove the one way.
So I'm going to switch off to removing it with a bolt extractor.
So I have to drill the center.
I'm going to take my punch,
i'm going to punch a hole, a starting point, in the center.
I'm going to drill a hole in there.
So a bolt extractor bit that drills out for a bolt extractor runs to the left,
not to the right. So it would not be the same as you would normally drill with a regular drill bit.
So you are drilling it out to the left.
I'm gonna take the drill bit out. Now I'm going to get an extractor.
This is a bolt extractor.
That's what it looks like.
The threads go to the left not the right.
So I'm going to...
see if I drilled deep enough that I can grab it.
Here we go. That took a lot of pressure
applied to the screw for that to
extract out a sheet metal screw out of wood.
So you have to drill the hole deep enough so you can get enough bite.
You see the hole I drilled did not penetrate the other side of the screw at all.
So if you want to use the screw again, you can use it,
but it's not going to look so great
after you remove the extractor
from the top, which I'm going to do right now to show you.
There you go.
This screw's a little bit hot now, so I can't really touch it with my fingers.
So that's what the head looks like after I drilled it out.
So that's how you basically remove a one-way screw with a bolt extractor.
That's the bolt extractor remover. That's the bit that extracts the screw.
This is the drill bit that you would use before you put the extractor in.
You have to drill deep enough, probably I would say,
about a half an inch in, approximately, to three quarters of an inch that you need to drill into the head
to be able to extract it out and that's the end result. Thanks for watching.
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