Which size screw for attaching focuser to Skywatcher 80ED?

[Shimrod]

So I've just bought an Skywatcher 80ED DS-PRO along with a Baader Steeltrack focuser. I'm making a right mess of removing the screws that hold the focuser to the OTA. I've got one out, but the other two are problematic and I'm not going to be able to use them to hold the new focuser. Can anyone tell me what size screw I need to replace them with?

thanks

[Merlin66]

On my ED80 these are M4 screws. I replaced mine with M4 x 8mm dome headed stainless steel screws.

 

[tooth_dr]

Just last last night I replaced the rusty starhead screws with some stainless ones.   Exactly as Merlin66 says, 8mm M4.

[tooth_dr]

If you drop me a PM I’ll stick some in the post for you. 

[Shimrod]

7 hours ago, tooth_dr said:

If you drop me a PM I’ll stick some in the post for you. 

That's very kind of you, but I've had to order a screw extraction set so I've added some m4 hex bolts onto the order.