Pack of 50 Hex Drive Threaded Insert Nuts Assortment Furniture Screw in Nut Bolt Fastener Connector M4/M5/M6/M8/M10 Zinc Alloy

6 popular sizes: M4 × 10 mm 10 pcs, M5 × 10 pcs, M6 × 10 pcs, M6 × 15 10 pcs, M8 × 20 5pcs, M10 × 25 5pcs Screw nuts have an external thread and an hexagon socket and are screwed with an Allen key. These inserts are made of a zinc alloy in high quantity and are delivered in a resealable transparent plastic box Insert nuts are beneficial over cylinder nuts and T-nuts as they can be installed from one side of the workpiece This set of screw nuts is available in different sizes and with different screw sizes The pre-drilled hole must be as deep as the length of the insert nut plus a part of the screw that may be screwed over the end of the nut in the workpiece