Exodus 26:17
Two 4*tenons shall there be in one board, set in order one against another: thus shalt thou make for all the boards of the tabernacle.
Two tenons shall there be in one board, set in order one against another: thus shalt thou make for all the boards of the tabernacle.
NKJV: Two tenons shall be in each board for binding one to another. Thus you shall make for all the boards of the tabernacle.
ESV: There shall be two tenons in each frame, for fitting together. So shall you do for all the frames of the tabernacle.
4:
Exodus 26:19 And thou shalt make forty sockets of silver under the twenty boards; two sockets under one board for his two tenons, and two sockets under another board for his two tenons.
Exodus 36:22 One board had two tenons, equally distant one from another: thus did he make for all the boards of the tabernacle.
Exodus 36:24 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.
*:
tenons-projections on a piece of wood which fit into corresponding holes to make a joint.