3B Diesel AC bracket bolts

[Coaster]

Hi Guys,
I am hoping that someone can help me with the thread size for the AC bracket mounting bolts on my 4 cyl 3B engine. I am trying to fit air onto my 1988 coaster.
I have found most of the parts I need for the job, seems they are pretty scarce.
It looks to me as they are 10mm metric in diameter either 1.25 or 1.5 my guess is 1.25. Just don't want to bugger up the thread. Thanks in advance for any help.

regards,
Paul

[dnegative]

Will be fine thread

[Coaster]

Thanks dnegative. I may need to get a tap and clean up the threads.
regards,Paul