Himmat shot scores of 66 and 71 at the par-70 course.
England's James Ruth (66-72) finished one stroke behind the Gurgaon-based golfer in second place at The Players Club.
The strong field at the 36-hole event included players from the European Tour, Challenge Tour and Asian Tour. The victory gave Himmat his fourth professional title. He also has an Asian Tour title to his credit.
Himmat posted a four-under 66 to be the joint leader in round one along with the English duo of James Ruth and Dan Osbaldeston. His opening round included seven birdies and three bogeys.
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Ruth then snatched a great birdie from the difficult, short 10th hole to once again get on level terms with Himmat, who then counterpunched with birdie on the 12th to once again move one shot ahead.
Himmat tripped and stumbled after his birdie on the 12th and proceeded to bogey the 13th and 15th but fortunately for him Ruth also bogeyed the par-5 15th and so the pair were still tied with two holes to play.
A little drama ensued up the eighteenth when Himmat could only reach the front of the green in three shots while Ruth had a very makeable birdie putt from around 10 feet.
Himmat putted up stone dead and marked, leaving Ruth to try and hole his to force a playoff but his effort looked into the hole but refused to drop and so the Indian tapped his in to be a worthy winner.