It leaves them as the Shield's only unbeaten side after five rounds, with Tasmania heading to the SCG for the return match against NSW from Tuesday next week.

Tasmania set up the win by firing out the visitors for 181 on day one and then amasing 493 in their first innings.

Beau Webster said they would head north with confidence to take on the Shield's second-bottom side again.

"To be only four-down at stumps on day one was a massive advantage and we drove it home on day two," Webster said.

"We're looking forward to getting stuck in again ... we have our tails up and we're going to really rip into them."

Matthew Gilkes (56), Ollie Davies (62) and Chris Green (61no) all made solid starts on Monday, but none could go on to score the century that NSW needed to set Tasmania a target on day four.

They were left bemoaning a poor first day.

"We didn't set it up too well, the first innings.We needed that effort probably in the first innings to get that sort of total, to be in the game," Davies said.

"We were chasing the game from day one."

Davies felt they were a solid chance to take the game into Tuesday when he and Green put on 65 for the seventh wicket.

But Lawrence Neil-Smith produced an excellent delivery that seamed back and bowled Davies.

Spinner Jarrod Freeman made another key breakthrough late in the final session, trapping Ben Dwarshuis lbw for 21 and ending his 51-run stand for the eighth wicket with Green.

Freeman also had Chris Tremain caught behind for a golden duck, ending the match.

Green's highest Shield score featured 159 balls and 10 fours, as he and Dwarshuis batted deep into the afternoon.

But NSW lost their last three wickets in four overs.

Tasmania's third win leaves them on 28.77 points, with second-placed Western Australia on 25.22.

Tasmanian Bradley Hope was man of the match for his maiden Shield century, an unbeaten 132, and two wickets.

Neil-Smith took 3-57 in NSW's second innings, while Freeman and Hope claimed two wickets apiece.

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