Dear aspirant,
Yes, you are eligible to get admission into NIT as long as you have gotten the required percentile in JEE Mains to get into NIT. This year, the minimum board percentage has been scraped off and anyone who has passed class 12 is eligible to get admission into NIT.
If you have a percentile of 90 - 93 you can get a seat in NIT. For more accurate predictions based on your percentile please use the college predictor linked below.
College predictor
Hope this helps.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile