I have got 58 marks in Mains Will get NIT seat in SC catogery
Sirry but the chances are feeble for you to get into NIT's with the present context.
However, you may try JEE main college predictor to know if there are any chances.
Good luck.
According to your marks, chances are less for admission to NITs. You can try for private colleges.
Good Luck!
Please mention your Categary jee mains rank.
Good luck.