Exodus 36:24 in the King James Version
And forty sockets of silver he made under the twenty boards; two sockets under one board for his two tenons, and two sockets under another board for his two tenons.
Context
23 He made the boards for the tabernacle, twenty boards for the south side southward.
24 He made 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.
25 For the second side of the tabernacle, on the north side, he made twenty boards