About 8 years ago, Woodworkers Store carried a brass Stove Bolt; 1/4"-20 x 1-1/2" F.H. (old part number 24786). The price back then was about $.30 each.
They no longer carry this product. I haven't been able to find this in their or anybody else's current catalog or online. Local sources do not carry this item at a reasonable cost. It was a very good compliment to using threaded inserts.