Arokia clocked a creditable 45.92secs to better his earlier best of 46.13secs which he clocked at the National Inter-State Championships in Lucknow in June.
Arokia's effort today was the seventh best ever by an Indian. The national record in this event is in the name of K M Beenu with a timing of 45.48secs set in Athens in 2004 Olympics.
Pre-match favourite Saudi Arabia's Yousef Ahmed Masrahi, the season leader, won the gold in Games record timing of 44.46secs while Abubakar Abbas of Bahrain took the silver in 45.62secs.