The cut off depends on branch, home state, category and which NIT you are asking for as you have not provided the detailed information so generally to get seat in lower and average NITs better to get 150 or above and if you wish to get seat in top NITs and in top branches like CS then your score should be 230-270. So plan and prepare accordingly so that you can easily get seat in your desired college.

Hope this helps!!!

You should score more then 125 marks in JEE Main to get NITs in general category other state quota. Cut off marks varies according to the branches.

To get CSE branch in top NITs you should score more then 230 marks in your exam in general category other state quota.

Good Luck!!