Review on Grip Rite Prime Guard P2STGDBK by Jimmy Jefferson

I bought about 6000 of these screws to assemble a very long fence. They fit well and looked great. However, after a few months I noticed that some of the picket fences were popping out. When I took a closer look, I found that the screws were broken. At first I thought "okay, just a few pieces, it's okay, I still have some, I'll replace them." It's been 4-5 months and they're still broken. I've replaced over 100 and find new ones broken every day. I live in Florida and have bolts in my fence to make it more resistant to hurricanes, but these bolts bother me. I used a regular drill to install and didn't over tighten anyway. Hope this helps someone suffering from this.