Anyone know the thread size of Kubota grease fittings?

   / Anyone know the thread size of Kubota grease fittings? #11  
M 6.0 x 1.0
The nice thing is this is smaller than the standard 1/4-28 zerk thread, so, a little drilling and tapping....your all set.
 
   / Anyone know the thread size of Kubota grease fittings?
  • Thread Starter
#12  
The nice thing is this is smaller than the standard 1/4-28 zerk thread, so, a little drilling and tapping....your all set.

Would I get metal pieces down in the hole?
 
   / Anyone know the thread size of Kubota grease fittings?
  • Thread Starter
#13  
   / Anyone know the thread size of Kubota grease fittings? #14  
Would I get metal pieces down in the hole?

You may, but there are ways to limit that problem like using grease on the drill and tap to catch chips. I use spiral fluted taps that bring the chips back to the surface vs driving them to the bottom of the hole.
 
   / Anyone know the thread size of Kubota grease fittings? #15  
The nice thing is this is smaller than the standard 1/4-28 zerk thread, so, a little drilling and tapping....your all set.

The (new) 1/4-28 thread's drill diameter is .213.

The (original) 6mm nominal major diameter is .233.

So you will still have part of the old thread in your drilled out hole. And then you need to follow that old thread with a different pitched thread, if you can get them started together...

I might try that trick on some angle iron but not on a tractor housing.
 
   / Anyone know the thread size of Kubota grease fittings?
  • Thread Starter
#16  
The (new) 1/4-28 thread's drill diameter is .213.

The (original) 6mm nominal major diameter is .233.

So you will still have part of the old thread in your drilled out hole. And then you need to follow that old thread with a different pitched thread, if you can get them started together...

I might try that trick on some angle iron but not on a tractor housing.

Considering my luck, I'm going to stick the correct metric fittings.
 
   / Anyone know the thread size of Kubota grease fittings? #19  
Yep...do believe they are British.
 
   / Anyone know the thread size of Kubota grease fittings? #20  
The Fred is correct.
The smaller ones are M6 X 1.0.
Any larger tapered pipe thread fittings should be 1/8 BSP,very close to 1/8 NPT.
Good Luck!
 

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