Hello Pavan Kumar, For at least just getting a seat in NIT's you need around 80 thousand rank as a OBC  Candidate, but you can get low NIT's like NIT Srinagar, NIT Nagaland, NIT Utrakhand, NIT Manipur, NIT Meghalaya etc with this rank also the branch which you will get will be not a ever green branch.



Last year closing cutoff rank for some NIT's for OBC Candidate are


NIT Srinagar


Chemical Engineering - 75783


Civil Engineering - 70020


Computer Science Engineering - 35819


Electrical Engineering - 57573


Electronics and Communication Engineering - 47752


Information Technology - 46214


Mechanical Engineering - 61158


Metallurgical and Material Engineering - 84365




NIT Nagaland


Civil Engineering - 70791


Computer Science Engineering - 47564


Electronics and Communication Engineering - 53416


Electrical and Electronics Engineering - 63566


Electronics and Instrumentation Engineering - 71647


Mechanical Engineering - 62142


So for just getting a seat you need around 80  thousand rank and percentile will be around 92 to 93 percentile, but if you need Top NIT's like Trichy, Warrangal then you need around 99 percentile.