Exodus 26:17-19

American Standard Version

¹⁷ Two tenons shall there be in each board, ^[a]joined one to another: thus shalt thou make for all the boards of the tabernacle. ¹⁸ And thou shalt make the boards for the tabernacle, twenty boards for the south side southward. ¹⁹ And thou shalt make forty sockets of silver under the twenty boards; two sockets under one board for its two tenons, and two sockets under another board for its two tenons: