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Metric leg bolts and dowel screws

Hanger leg bolts are what is commonly used on screw-on couch type legs. If the portion protruding outwards from the old leg has Metric threads, none of our replacement legs will fit.

You will know if they are metric while attempting to replace, as the fastener hole in the couch/sofa will seem a little too large and will not screw in properly. You could replace our U.S. standard 5/16" hanger bolts with a metric size...if you can locate one.

An simple option is to remove the 5/16" hanger bolt from the new replacement leg and replace with a dowel screw . Then, after predrilling a 3/16" hole in the couch frame 3/4" or more away from the original hole, simply screw in the replacement leg. When tightened up flush against the couch/chair frame, it will be strong.
This is how.

To remove any hanger bolt, first do one of the following.

• Place the threaded portion into a machinist vice, tighten and twist the leg counter clockwise. Discard the metric hanger bolt. To install the new dowel screw into the leg, see Dowel Screw installation within.
• Use a Vice grip pliers and twist the bolt and the leg in opposite directions. To install the new dowel screw see Dowel Screw installation within.