“At last simplicity
that lets site
carpenters achieve
what we want.”
M. Milner
Structural Engineer
“At last simplicity
that lets site
carpenters achieve
what we want.”
M. Milner
Structural Engineer
“Genius!
This is going
to go mad.”
LW
Carpenter
“We found you online
when we were searching
for an alternative to the
coach bolt.”
Buyer
Ironmongery Direct
“Brilliant!
I can’t believe
no-one has thought
of it before.”
KD
Carpenter
Coach Bolts are a generic fixing. As a result were not designed to specifically fix timber together. The round domed head makes it impossible to grip or restrain when it starts to move, meaning the joint will not be tight. If the joint is not tight and shear force is applied to the shank of the bolt it will fail/break. No such problems with Joyner Bolts. The spiked head grips the wood removing the possibility of any turning. This means you can increase the torque on the bolt.
Using threaded rod is only cost effective in the initial purchase price. The time it takes to cut each piece of rod to the required length, then to purchase the additional nuts and square washers, factor in the waste and the need to hold both nuts with separate spanners to tighten….it actually makes threaded rod more expensive. Furthermore, once the rod is cut the protective coating is lost. Joyner Bolts are task specific. You simply buy the bolt for the job needed. No cutting, no waste, no lost time…Job Done.
Approximately twice as much, but the time saved in using Joyner Bolt far out weights the initial small cost difference. See our Walworth Road Case Study.
Yes, undertaken by Timber Research and Development Association.
Joyner Bolts are made from standard carbon steel 4.8 grade.
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