Nitu (48kg), Jyoti Gulia (51kg), Sakshi Choudhury (54kg) and Shashi Chopra (57kg) won gold medals in the first set of finals, which were halted for 45 minutes by a minor fire mishap in the spectator stands.
Adding to the tally were two bronze medals secured by Neha Yadav (+81kg) and Anupama (81kg), making it India's best ever performance at the marquee age group event.
The country had won just one bronze medal at the previous edition of the event and had not won a gold since 2011 when Sarjubala Devi secured the yellow metal.
"It was an easier final compared to the semifinals. I did not find it too tough to break through," said one of the four Haryana finalists at the event.
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Nitu took her time to get a measure of her rival but once she was done with it, the Indian had no trouble connecting her straight punches.
Jyoti's bout against Russia's Ekaterina Molchanova was fought on an even keel. In an exciting contest, both the boxers matched each other punch for punch and had the packed stadium on its feet with their exchanges.
The Indian fetched a unanimous victory, leaving the Russian boxer in tears and her coaches irate.
Similar was contest between Sakshi and England's Ivy-Jane Smith. Smith seemed more dominant but could not find favour with the judges, who were 3-2 in awarding the bout to the home favourite.
Shashi, however, did not face much of a contest from Vietnam's Ngoc Do Hong even though the judges ruled it 3-2 in her favour.
The lanky Indian, recommended into the camp by boxing's national observer and former Commonwealth Games gold-medallist Akhil Kumar, put her height and reach advantage to good use and decidedly the more aggressive of the two in all the three rounds.