Concrete screwbolts into engineering brick

sparer · 3 Oct 2018

Has anyone tried using screwbolts (Screwfix 6293P) into engineering bricks? I want to fit a bolt down post onto my wall which has blues as a solider course.

Notch7 · 3 Oct 2018

You might find they struggle.

Usually 6mm is recommended for the pilot hole, but you might need a 6.5mm.

Or go for expanding fittings intead, rawl plug or fischer plug.

sparer · 3 Oct 2018

I wanted to get away from an expanding fixing. Maybe i'll try resin and studding (until I see the cost).

Notch7 · 3 Oct 2018

sparer said:
I wanted to get away from an expanding fixing. Maybe i'll try resin and studding (until I see the cost).

Ive not fixed concrete screws into engineerings, but I know they wont go into hard stock bricks easily -the tolerance on the drill size is quite critical.

foxhole · 3 Oct 2018

Work fine assuming you have descent impact driver .

sparer · 3 Oct 2018

I do have a decent Dewalt impact driver. For some reason I didn't think of using it for this. I was going to use a socket wrench!

foxhole · 5 Oct 2018

sparer said:
I do have a decent Dewalt impact driver. For some reason I didn't think of using it for this. I was going to use a socket wrench!

If they jam back out and lubricate, wax,grease, even soap will do.

Notch7 · 5 Oct 2018

foxhole said:
If they jam back out and lubricate, wax,grease, even soap will do.

Its great when they wont go in or out and the impact is running out of battery

sparer · 10 Oct 2018

Just for future information. The concrete bolts worked fine in engineering bricks. Wasn't difficult at all when using an impact driver.

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Concrete screwbolts into engineering brick

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