need help finding replacement arbor screw/bolt for chop saw

[guyinthe64]

Hey guys, long time lurker, first time poster. I was given a used Pro-Tech 7208 Type 2 compound mitre saw, that is in great working order, EXCEPT that it is missing the bolt that holds the blade on. I know that these are reverse thread, but how can I figure out the size? Any thoughts before I start ordering random arbor bolts? This company no longer exists, and I can't find any specs on parts. Thanks in advance.

-Alex

 

[Larryjones]

Use a soft wood dowel and screw it into the hole, take to Fastenal and match it up? I bet other brands use the same bolt.