Numbers 35:16
And if he smite him with an instrument of iron, so that he die, he is a murderer: the murderer shall surely be put to death.
Nave's Topical Index—AKJV

1 Samuel 17:7
And the staff of his spear was like a weaver's beam; and his spear's head weighed six hundred shekels of iron: and one bearing a shield went before him.
Nave's Topical Index—AKJV

Job 20:24
He shall flee from the iron weapon, and the bow of steel shall strike him through.
Nave's Topical Index—AKJV

Job 41:7
Can you fill his skin with barbed irons? or his head with fish spears?
Nave's Topical Index—AKJV