Exodus 36:22-24

New King James Version

²² Each board had two ^[a]tenons ^(A)for binding one to another. Thus he made for all the boards of the tabernacle. ²³ And he made boards for the tabernacle, twenty boards for the south side. ²⁴ Forty sockets of silver he made to go under the twenty boards: two sockets under each of the boards for its two tenons.