Being from OBC Category, securing anywhere around 87-88 Percentile in JEE Main, you have fair chances in making it into the Top 1000 in JCECE Jharkhand State Merit List, and hence fair chances in securing some of the Standard Branches at BIT Sindri like Metallurgical, Chemical or Mining. Hence you may consider 86-87 Percentile as a Threshold in JEE Main if interested in Pursuing Engineering from BIT Sindri being from OBC Category.

For more information about BIT Sindri do follow the link below

https://www.careers360.com/colleges/bit-sindri-dhanbad/amp