Easton's Bible Dictionary: M. G. Easton, M.A., D.D.
Heb.hashukum, plur., joinings (Ex. 27:17, 38:17, 28), the rods by which the tops of the columns around the tabernacle court were joined together, and from which the curtains were suspended (Ex. 27:10, 11, 36:38).
In Jer. 52:21 the rendering of a different word, hut, meaning a "thread," and designating a measuring-line of 12 cubits in length for the circumference of the copper pillars of Solomon's temple.