This is a kind of threaded insert. There's two sorts: one particular is created to form a bulge over the back again facet on the panel like a screw is tightened in its threads. The other is equally drawn in using a screw, but is drawn in the sleeve as https://g10-knife-for-sale23196.thezenweb.com/how-much-you-need-to-expect-you-ll-pay-for-a-good-custom-cnc-turning-64187288