Bolt sizing help.

Soldato
Joined
5 Jul 2007
Posts
5,511
Location
London
Hi there, i'm rebuilding a garden bench for my mum, and i've had to angle grind the 66 bolts which bolt the wood down to the bench. I had to grind them off as the threads were jammed full of some sort of varnish and grime so were impossible to undo.

Anyhow, I need to buy some new ones to put it back together, but I don't understand how the sizing works. If someone could explain it to me that would be fantastic.

I know i need Coach Bolts like these ones. but no clue on how to measure the right size.

http://www.screwfix.com/prods/11392...lts/Threaded-Coach-Bolt-M6-x-30mm-Pack-of-100

Thanks, Tom.

P.s. thought this was probably the best place to ask.
 
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