Hello aspirant your jee mains category ranking is unlikely less to secure a seat in nit colleges according to this year cut off for some of the nits are

NIT SRINAGAR:: Chemical engineering 20900

NIT MIZORAM:: Mechanical engineering 20993

NIT SILCHAR::   mechanical engineering 18973

From the above OBC cutoff of nits this year the chances of you to get nits is less . For upcoming round the ranking doesn't very much.

For more information visit this link

https://www.google.com/amp/s/engineering.careers360.com/articles/nits-cutoff-for-top-btech-branches/amp