Metric or USS on a BX22

DustyRusty

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Are the wheel bolts on the BX22 (1800/2200) metric threads or are they USS fine threads? I know that the BX22 was manufactured in the USA, but I don't know if it is a mixture of US and Japanese parts. If they are metric, do you know the exact size? thanks
 

GreensvilleJay

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On a BX23S , they're 1/2-20 on the rears.
Oddly if you goto Kub parts, it only says 'bolt, 1/2'..NOTHING else
like LENGTH might be important !!!

Try the US kub site, parts...get the part numbe r, then use google to locate resellers of them, maybe more info.
 

DustyRusty

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Took a bolt out tonight, and tried a USS 1/2-20 nut and it threaded onto the bolt. I am working on getting some "Jeep" spacers mounted, and have run into a few things that I need to work out before mounting them. I will probably follow up with a new thread to keep things concise and easily searchable in the future. Thanks
 

North Idaho Wolfman

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Re: Metric or SAE on a BX22

Yes they are SAE, 9/16 on the front and 1/2 on the back.
 

dlsmith

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I was surprised too, that Kubota used 9/16" bolts on the rear wheels on my BX. The last time I saw 9/16" used on anything was on some IH dozers and construction equipment back in the '70s. I still have some 9/16" bolts and nuts in my bolt bin that are left over from way back then.
 

GreensvilleJay

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What I HATE is the 'hybrid' philosophy. ERRRRRR.. be either Metric or imperial NOT both.
Frankly it should be 100% Metric, there's no good reason to be hybrid.
 

North Idaho Wolfman

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I was surprised too, that Kubota used 9/16" bolts on the rear wheels on my BX. The last time I saw 9/16" used on anything was on some IH dozers and construction equipment back in the '70s. I still have some 9/16" bolts and nuts in my bolt bin that are left over from way back then.
9/16 on the back? Should be 1/2" bolts on the back and 9/16 on the fronts.
 

DustyRusty

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What I HATE is the 'hybrid' philosophy. ERRRRRR.. be either Metric or imperial NOT both.
Frankly it should be 100% Metric, there's no good reason to be hybrid.
You have introduced a new term to the discussion... Imperial... To be honest, I have not heard the term before, except for the way liquids were sold in some countries back in the 1960's. i.e. Imperial Quart. I remember Narragansett beer's GIQ or giant imperial quart, which contained 20% more than the U.S. standard quart. It was the beer makers way of getting around the legal limitations of a beer bottle having no more than quart of beer. It was very popular with college students in the Northeast.

Getting back to the bolts, we have what was 3 standards in the US, SAE (society of automotive engineers), which is the coarse thread. USS (United States Standard), which is fine threads, and Metric, which measures the thread pitch between the peaks of two threads in millimeters.

I tried looking up Imperial measurement, and found conflicting information, but what I was able to deduced from what I found, it is the measurement of inches and feet in the US, and that Imperial is the generic term for both fine and coarse bolts in the US. Learn something new every day.
 

lugbolt

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The american bolts are a sign that the part was made here. If it's metric, it's got a good chance of being built in Japan.
 

dlsmith

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9/16 on the back? Should be 1/2" bolts on the back and 9/16 on the fronts.
You're right, I can't tell the front from the rear sometimes in those senior moments.

Regardless, why didn't they go ahead and use metric fasteners on the wheels?
One of the mysteries of the universe I guess.

Another thing that I dislike, but understand on the front wheels, is why most foreign made vehicles (at least the ones I've gotten stuck working on) use bolts instead of studs on the axles.