Bolt Size for attachments

[Anonymous-0]

I have a Ford 2600 and am trying to determine the size bolt that is used to bolt attachments to the tractor such as front end attachments. There are four sets of two holes each (two sets on the left side and two on the right) about in line with the oil filter. I am trying to attach a bracket that holds a 55 gal. drum for water used when planting tobacco plants (or whatever).

I've narrowed it down to larger than 5/8 but smaller than 3/4. I've tried 18mm but it seems to be a little loose in the threads. 11/16" sounds like an odd size.

Any suggestions??

 

[NBAllen]

I don't think there is such a thing as an 11/16" bolt, at least not by current ANSI / ASME standards. I don't know if the Ford 2600 is a "metric tractor" or not....

If the holes are tapped, are the threads clean and in good condition?

I would think about just using a bolt / washer / washer / nut combination to attach the bracket (Grade 5 bolt).

Nathaniel

 

[ScottyHOMeY]

I agree 11/16 would be odd Have you tried both fine and coarse threads in both sizes?