On one side, the bracket has a hollow pin that goes into a mount. The other side has a bolt. There is no need for two bolts, since with the one bolt in place, neither side can go anywhere and the radiator is secure. The R&G brand radiator guard adds a bolt to the blank side for securing their guard.Also a ‘12. Strange to have two spots for bolts but provide just one. Go figure. Thanks for info…I won’t worry that I somehow lost a bolt. Now, the many fastener types, that’s a different story.