Exodus 27:10, 12-18

it shall have twenty pillars and twenty bronze sockets; but the hooks of the pillars and their fasteners shall be silver

For the width of the court on the west side there shall be curtains of fifty cubits, with ten pillars (support poles) and ten sockets. The width of the court [to the front], on the east side shall be fifty cubits. The curtains for one side [of the gate] shall be fifteen cubits with three pillars and three sockets. On the other side [of the gate] the curtains shall be fifteen cubits with three pillars and three sockets. For the gate of the court there shall be a screen [to provide a covering] of twenty cubits, of blue, purple, and scarlet fabric and finely woven [embroidered] linen, the work of an embroiderer, with four pillars and four [base] sockets. All the pillars (support poles) around the court shall be joined together with silver rods; their hooks shall be of silver and their sockets of bronze. The length of the court shall be a hundred cubits, and the width fifty [cubits] throughout, and the height five cubits of fine twisted linen, and their sockets of bronze.