Verses with the word hammers in the Old Testament (3 verses):

Psalms 74:6
But now they break down the carved work thereof at once with axes and hammers.

Isaiah 44:12
The smith with the tongs both worketh in the coals, and fashioneth it with hammers, and worketh it with the strength of his arms: yea, he is hungry, and his strength faileth: he drinketh no water, and is faint.

Jeremiah 10:4
They deck it with silver and with gold; they fasten it with nails and with hammers, that it move not.