What is the strongest type of thread?

I'm wanting to make homemade Paracord, and I want to make it as close to military grade as possible in a handmade cord. I want to use strong thread for the core and casing, but I don't know which thread is strongest.

onrust7 years ago
I use Spiderwire because it is made of Kevlar.  It is a fishing line that comes in many different strengths.