Charles Ellicott Commentary Exodus 27:19

"All the instruments of the tabernacle in all the service thereof, and all the pins thereof, and all the pins of the court, shall be of brass." — Exodus 27:19 (ASV)

THE VESSELS AND PINS.

All the vessels of the tabernacle—that is, all those which had not already been appointed to be of a richer material . Bronze was the most convenient material for vessels and maintained its place even in the magnificent Temple of Solomon (1 Kings 7:15–45; 2 Kings 25:13–14).

All its pins.—These had not been previously mentioned, but the writer assumes it is known that every tent (’ohel), such as he has described, can only be erected by means of cords and tent-pegs, or “pins.”

All the pins of the court.—The “pins of the court” seem to be pegs employed internally and externally to keep the pillars of the court in place. Their employment implies the use of cords.