Posting code on the forums: Using code tags properly
So your bolts are now have non-kinematic rigidbodies? They have colliders, and so do the bricks?
That script is on the bricks? Those are some main things I can think of to check.
Aside from that… welcome to Unity. 
There’s some good starting tutorials here, if you haven’t already gone through some for experience: https://unity3d.com/learn/beginner-tutorials
Hope that helps some.