I have removed the aluminium plugs from my 2.0 litre crankshaft and put a tap through to make a 7mm thread. (I broke 3 taps doing this process!).
I now require 7 mm grub screws.
Does anyone know where I can get these? Preferably in Australia.
I could use bolts sawed off after tightend in position but prefer socket headed grub screws for ease of removal.
Thanks,
Dom
i guess now its too late.
but imo for that kind of work i would prefer tapered plug screws like the one in photo below.
common in bsp threads. with a bit of locking fluid.
also in australia..im far from, but i know that one of your local screw maker did some very stranges things, so why not your short m7 grub screws. brand is Umbrako.

but imo for that kind of work i would prefer tapered plug screws like the one in photo below.
common in bsp threads. with a bit of locking fluid.
also in australia..im far from, but i know that one of your local screw maker did some very stranges things, so why not your short m7 grub screws. brand is Umbrako.
2 stroke addict
7mm grub screws
Since I have already cut 7 x 1 mm threads in the plug holes of the crank I do not really want to drill and tap them to a larger size.
Since not being able to find 7 mm grub screws anywhere on the planet my next resort is to try 1/16 NPT tapered plugs which are easily found.
The 1/16 NPT tapered plugs are just over 7mm in diameter and the thread is 27 per inch. Thats very near a 7mm grub screw.
Saturday I will try to run a 7mm die nut over these NPT plugs to convert them into 7mm grub screws. I hope this works.
If I knew this before I started I would have tapped the holes in the crank with a 1/16 NPT tap. Perfect.
A learning curve!
Since not being able to find 7 mm grub screws anywhere on the planet my next resort is to try 1/16 NPT tapered plugs which are easily found.
The 1/16 NPT tapered plugs are just over 7mm in diameter and the thread is 27 per inch. Thats very near a 7mm grub screw.
Saturday I will try to run a 7mm die nut over these NPT plugs to convert them into 7mm grub screws. I hope this works.
If I knew this before I started I would have tapped the holes in the crank with a 1/16 NPT tap. Perfect.
A learning curve!
maybe these guys have something..
http://www.mfgsupply.com/m/c/1-10.html?mv_pc=Froogle
http://www.mmsacc-stainless.com/metric/ ... crews.html
http://www.mfgsupply.com/m/c/1-10.html?mv_pc=Froogle
http://www.mmsacc-stainless.com/metric/ ... crews.html