Bolt strength?

GregMcN · Post by **GregMcN** » Tue Sep 05, 2017 3:46 pm

Hi

I need to purchase new set screws to attach the starter clutch to the rotor and for the selector drum (6X25). As originals are not readily available does anyone know what strength these need to be?

Thanks Greg

border0_3 · Post by **border0_3** » Tue Sep 05, 2017 4:01 pm

Hi Greg,

You'd be safe with Hi Tensile 10.9

Regards Richard

GregMcN · Post by **GregMcN** » Tue Sep 05, 2017 4:17 pm

Thanks Richard

I assumed 10.9 would probably be OK but wondered if anything less would be good enough as I can only find allen headed at 10.9.... although in some way better I tend to prefer crosshead as you can use an impact driver more successfully if you have problems.

Greg

border0_3 · Post by **border0_3** » Tue Sep 05, 2017 4:31 pm

Hi Greg,

I wouldn't go lower than 8.8 if you want Phillips head.

Maybe Alan W on this site could help from the UK.

Richard

AlanW · Post by **AlanW** » Tue Sep 05, 2017 5:15 pm

Hi Greg,
I'm not sure what grade you can get cross head screws in but I would have no problem using 8.8 or 10.9 counter sunk Allen screws and you can still use an impact driver on them if you want to.
Also you could Loctite them in and stake them with a center punch.
Cheers Al.

GregMcN · Post by **GregMcN** » Wed Sep 06, 2017 4:02 pm

Thanks all

I will go with 10.9 allens.

Greg