Reply To: Z lock

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I bought a coupler nut at the local hardware store out of the drawers. It’s 5/16×18 thread, but it measures 11mm (7/16″) across the flats instead of 1/2″ (13mm) like every other 5/16×18 nut in the joint. It’s obviously unusable with the standard printed Z-Nut lock.. Watch out for this..