Exodus 38:28-31

28The remaining 45 pounds of silver was used to make the hooks and rings and to overlay the tops of the posts.

29The people also brought as special offerings 5,310 pounds of bronze,

30which was used for casting the bases for the posts at the entrance to the Tabernacle, and for the bronze altar with its bronze grating and all the altar utensils.

31Bronze was also used to make the bases for the posts that supported the curtains around the courtyard, the bases for the curtain at the entrance of the courtyard, and all the tent pegs for the Tabernacle and the courtyard.