[Thread size for ASA tube ring holes]

Dietmar,

 

Thank you. this really helps.

 

Is it M8x1.25 (coarse thread)?

 

Regards

David

[Thread size for ASA tube ring holes]

Ian,

Thanks for this. I appreciate you checking.

On my N16 rings actually M6 was too small, so these must be different. Anyone out there with a N16 who can check please?

 

Regards

 

David

[Thread size for ASA tube ring holes]

Anyone,

 

I use the standard ASA tube rings for my ASA N16 scope. I was told that the bolts need to fit the threaded holes for mounting plates are M6x1 - alas they are not, which I only found out when I was 640 miles away at my remote observatory with no means of backup.

I will be going back to the observatory again shortly and want to install a plate, so can someone please check their rings (I would guess all the various tube sizes have the same hole spec - I hope) and let me know what the thread pattern needed is.

I will be extremely grateful for anyone who can assist me here.

Thanks

David Churchill