Self threading bolts

[Digester Man]

I am looking for self threading / self tapping bolts around M8 - M10 in size. I have seen them before but I can’t find any for sale. We got a roller door installed and the fitters had a bunch of them for bolting the runners into the RSJ’s on our shed.

The type I have seen look like a normal M10 bolt but the shank is slightly triangular rather than round. The idea being you drill a pilot hole and then screw the bolt into the hole, and it cuts a thread into the hole.

Anyway, if someone could point me to a website or give me the correct name of these I would be much obliged. Local engineering supplier has never heard of them either.

 

[Paddington]

Ankabolts ? Thunderscrews ?

 

[ACEngineering]

I am looking for self threading / self tapping bolts around M8 - M10 in size. I have seen them before but I can’t find any for sale. We got a roller door installed and the fitters had a bunch of them for bolting the runners into the RSJ’s on our shed.

The type I have seen look like a normal M10 bolt but the shank is slightly triangular rather than round. The idea being you drill a pilot hole and then screw the bolt into the hole, and it cuts a thread into the hole.

Anyway, if someone could point me to a website or give me the correct name of these I would be much obliged. Local engineering supplier has never heard of them either.

Google thread forming screws and bolts. I think that's what your looking for.

 

[Highland Mule]

Tek-screws should do that.

 

[Badshot]

I am looking for self threading / self tapping bolts around M8 - M10 in size. I have seen them before but I can’t find any for sale. We got a roller door installed and the fitters had a bunch of them for bolting the runners into the RSJ’s on our shed.

The type I have seen look like a normal M10 bolt but the shank is slightly triangular rather than round. The idea being you drill a pilot hole and then screw the bolt into the hole, and it cuts a thread into the hole.

Anyway, if someone could point me to a website or give me the correct name of these I would be much obliged. Local engineering supplier has never heard of them either.

That sort of thing?

 

[Digester Man]

Ankabolts ? Thunderscrews ?

Those are concrete fixings

Google thread forming screws and bolts. I think that's what your looking for.

Yes that's bringing up a few more useful results... Taptite seems to be the name of what I'm after

Tek-screws should do that.

Haven't seen Tek Screws in M8 or M10 before

View attachment 822846
That sort of thing?

Perfect that's just them, never heard of Taptite before cheers!!

 

[Paddington]

Those are concrete fixings



Ooops, missed the RSJ part, thought they were going into a wall or floor.