Dustin "Screech" Diamond just got sprung from jail a month early, due to his handiwork with a mop and bucket ... TMZ has learned.
Officials at Ozaukee County Jail in Wisconsin tell us Screech was released early Monday morning after serving just under 3 months behind bars for carrying a concealed weapon and disorderly conduct.
We're told he was able to knock a month off his sentence by cleaning floors in the jail, and doing laundry.
Screech was convicted for stabbing a man during a bar fight back in December 2014.
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