hammer and tongs

bring down the hammer

To treat very harshly.

bring to the hammer

To put up for sale by auction.

hammer away

To continue discussing or trying to solve.

hammer home

To repeatedly or continually emphasize (an opinion or idea) until or so that a person or group of people understands it.

nail the hammer on the head

Nonstandard form of hit the nail on the head.

put the hammer down

To drive quickly; to step on the accelerator.