Where are all the Oberdorfers???

[KWKloeber]

Richard

Apologies for not answering sooner.  The notices of new message posts coming thru to me is haphazard at best.

They are M6 double-ended, unequal length thread, stainless-steel studs.
The OEM Kubota studs have an interference fit, but I just use red locktite to hold these.

I use two lengths - 25mm for the Ob flat base pumps and 30mm (a bit long, 27-28mm would be better) to use with the L-clips on the Sw 903/908 pumps or Ob 908 pump.  I buy them wholesale 50 a bag.

PM me if you want a set of studs/nuts (I have no clue how long it takes to get across the border.) 
Or you can get the Kubota steel studs p/n 15221-88210.
McMaster-Carr also has the nuts p/n 94710A103 and 27mm studs p/n 5580N112

-Ken