square expanding tube bolts
 

I got some trestles form screwfix to support scaffold boards. Sturdy
enough, but they have no usable edge stops (the ones provided do not
allow you to fit 3 scaffold boards between).
I need to fix a metal plate or something to each end of the square
tube that supports the boards. Tube inside dims are 22 to 23mm. I
remembered some kind of square bolts that fit into the the tube ends
and expand as you tighten them like a square rawl bolt.
Anyone know where I can get such connectors ?
Simon.

square expanding tube bolts
 

sm_jamieson wrote:
I got some trestles form screwfix to support scaffold boards. Sturdy
enough, but they have no usable edge stops (the ones provided do not
allow you to fit 3 scaffold boards between).
I need to fix a metal plate or something to each end of the square
tube that supports the boards. Tube inside dims are 22 to 23mm. I
remembered some kind of square bolts that fit into the the tube ends
and expand as you tighten them like a square rawl bolt.
Anyone know where I can get such connectors ?
Simon.
Get some square steel bar that is the best fit you can get inside the
tube. Cut a piece 60mm or so and drill along the length to just fit a
rawl bolt in. Hacksaw lengthwise to make two similar pieces. Fit inside
tube expanding with the rawlbolt.

Bob

square expanding tube bolts
 

On Fri, 10 Apr 2009 12:51:26 -0700, sm_jamieson wrote:

I got some trestles form screwfix to support scaffold boards. Sturdy
enough, but they have no usable edge stops (the ones provided do not allow
you to fit 3 scaffold boards between). I need to fix a metal plate or
something to each end of the square tube that supports the boards. Tube
inside dims are 22 to 23mm. I remembered some kind of square bolts that
fit into the the tube ends and expand as you tighten them like a square
rawl bolt. Anyone know where I can get such connectors ? Simon.


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A length of threaded rod (full width of trestle) would probably serve the
same purpose.

Cic.

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