Greetings, Sir. You mentioned your son belongs to SC category and he has secured CRL-AIR 359465 and SC Category Rank 26031. As your son is a SC candidate, his Category Rank will be taken into account in Counselling sessions.

Based on his rank, your son has low chance to get chance at any branches of NIT, IIIT or GFTI.  However, if the seats are available till the final round, he maybe able to secure a seat at following Public/Government institutes:

1. Netaji Subhas University of Technology (West Campus) (Civil Engg, Manufacturing Process and Automation Engineering)
2. Chandigarh College of Engineering and Technology ( Mechanical Engg)
3. I IIT Delhi - Indraprastha Institute of Information Technology ( Electronics and Electrical Engg)
4. Delhi Skill and Entrepreneurship University - Okhla (Mechatronics Engg; Tool Engg.)

To know more about cutoff trends in various NITs in JEE Main, check out the article below:

https://engineering.careers360.com/articles/jee-main-cutoff-for-top-nits

You can also check out more details about JEE Main 2021 cutoffs from the link of the article given below:

https://engineering.careers360.com/articles/jee-main-cutoff

To get a detailed personalized report on your son's eligibility in various colleges based on your performance in JEE Main, I encourage you to use JEE Main 2021 College Predictor:

https://engineering.careers360.com/jee-main-college-predictor?utm_source=qna&utm_medium=jee_cp

I hope this information is enough to answer your query. I wish you all the best for your son's future and career.

Thank you.