The metal head of a hammer is loose. In order to get the hammerhead tight again, you should drop the hammer with the head end down.

Question

Quizplus · Accepted Answer

Dropping the hammer with the head end down could damage the hammer or cause injury. To tighten a loose hammerhead, you should wedge it more securely onto the handle, often by using a wooden wedge or by soaking the head in water if it's a wooden handle, to swell the wood for a tighter fit.

The Metal Head of a Hammer Is Loose