Kurt 3800V Series Operating Instructions Manual page 15

15.Then turn the collar back TWO (2) more screw holes. This
will allow proper distance for the collar to lock on the
threads and keep the bearings firmly in place. (Items
15-16—See Fig. 2)
16.Install the four SHCS and tighten.
17.Install the screw support in the body on the screw (Hex
end).
18.Your vise is now ready to use.
Figure 2
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