High precision hex socket with threaded flanges. Made of high quality zinc alloy for durability and rust protection. Easy to install, drill just the appropriate size hole and install with a hex key, tapered external threads it is not easy to come out of the vibration. Suitable for pine softwood, plywood, fiberboard, etc, have good effect in furniture combination. Package include: 50pcs Hex Socket Nuts. High precision hex socket with threaded flange. An insert nut provides a threaded socket for a wooden support. workpiece, similar to a wall anchor. These insert nuts are inserted into a screw pre-drilled hole, in this case the external protrusions bite into the wood, preventing the nut from turning or pulling. Great for furniture p> installation and carpentry. Material: zinc alloy Size: M6*15mm Quantity: 50PCS Package includes: 50 x M6*15mm Hex Socket Head Screws