230 Pieces Zinc Alloy Hexagonal Threaded Insert Nuts, External Thread Nuts M4 M5 M6 M8 for Nut Tool Kit

Material: The hexagon socket nut is made of color-plated carbon steel, high hardness, not easy to deform, corrosion resistance, good fastening effect, and can be easily screwed. Features: The nut has high strength and impact resistance, and is more stable when connected to wooden furniture, effectively preventing loosening and can be firmly fastened for a long time. Total size: 8 different screw sizes, M4 * 10mm * 80, M5 * 10mm * 60, M6 * 10mm * 30, M6 * 15mm 20, M6 * 17mm * 20, M6 * 20mm * 9, M8 * 20mm * 5, M8 * 25mm * 6 (inner diameter * length * number). Safety Tips: Drop wood glue into the hole (on the side wall), insert and rotate the nut several times, drop glue onto the nut thread, and then tighten the nut fully so that it is flush with the wood. Flat and as dry as possible. Installation instructions: Need to drill a small hole of the appropriate size with an electric drill, Use a hex wrench to screw it into the hole, Then add 2-3 mm of wood glue into the hole (on the side wall). Insert the nut and rotate it several times, Then drop 2-3 mm of glue onto the nut thread, Then rotate the nut 180 degrees, Tighten the nut fully, After that, the nut will not loosen and is firmly connected to the wood.