Bolt sizes Metric?

[allenr]

I have had 2 70's vintage Kubota's, and they are virtually 100% metric (which I'm really starting to prefer once gotten used to)

Sherweld

What I dislike about Metric is that for a given bolt size there may bo 2 or more head sizes. (at least thats how they are in Australia)

And then there's at least one size,think it may be 10mm, where there is a third pitch, not just a coarse and fine.

 

[aczlan]

Thanks for all the info on this topic... I did notice that there are always some SAE wrenches that are close to the metric sizes and they fit fine, plus luckily I've got a metric set.

the ones that are close (that I use frequently) are

1. 6.5MM=1/4"
2. 8MM=5/16"
3. 14/15MM=9/16" (depending on the maker of the wrench/bolt and how well made it is)
4. 17MM ~ 11/16"
5. 19MM = 3/4
6. 24MM = 15/16
7. 25MM ~ 1"

Legalese: this not a complete list, it is provided as-is for information only and is not guaranteed to be accurate, I am not responsible for any broken tools, parts, or people as a result of this information.

Aaron Z

 

[Sherweld]

What I dislike about Metric is that for a given bolt size there may bo 2 or more head sizes. (at least thats how they are in Australia)

And then there's at least one size,think it may be 10mm, where there is a third pitch, not just a coarse and fine.

Agreed (although I haven't encountered that {yet} on Kubota) ...... but then I have run into the same thing with "our" sizes. Particularly annoying when the wrench brought from the shop will only do three out of the four nuts to be removed, requiring yet another trip to the shop to remove the heavy duty size.

I will say, that the metric thread pitch(s) still confuse me a bit though.

Regards
Sherweld

 

[dfkrug]

Looking to find out if most of the bolt sizes on Kubota tractors are metric or US?

On many Kubotas sold in the US, the ROPS/FOPS and loaders are made here,
so they have SAE bolt (machine screw) sizes.

You can often tell metric vs SAE with a quick glance at the head. An SAE
bolt of grade 5 or better will have radial hash marks on it and a metric
will use a grade mark like 8.8 or 10.8. For Kubotas and some others (like
Toyota) you will find a grade rating like 4 or 7, up to 11 or 12 on the
head. In this case, the # marks fill the head and there is no standard
mark like 8.8 for these metric bolts.