Exodus 38:30

And therewith he made the sockets to the door of the tabernacle of the congregation, and the brasen altar, and the brasen grate for it, and all the vessels of the altar,

Cross-references

Exodus 26:37 specifies bronze bases for the entrance screen, matching the sockets made here from the bronze offering.

Exodus 39:39 lists the same bronze altar and grating made here, confirming the items crafted from the bronze.