Size:230 Product information:Product name: Hexagon socket head cap screwMaterial: ironSurface treatment: galvanizedHead type: hexagon headYou will have:/b>80pcs 4*10mm60pcs 5*10mm30pcs 6*10mm20pcs 6*15mm20pcs 6*17mm9pcs 6*20mm5pcs 8*20mm6pcs 8*25mmInstallation Notes:/b>Need to drill a small hole of suitable size with an electric drill,Use a hex wrench to screw it into the hole,Then, add 2-3 mm of wood glue to the hole (on the side wall). Insert the nut and turn it several times,Then drop 2-3mm glue on the thread of the nut,Then turn the nut 180 degrees,Please tighten the nut completely,After that, the nut will notdoes not loosen and is firmly connected to the wood. Note: /b>The depth of the pre-drilled hole should be deep to the length of the inserted nut and the bolt can be turned beyond the depth of any part of the end of thenut. 230Pcs Zinc Alloy Hex Threaded Insert Nuts Threaded Inserts Insert Nuts External Thread M4 M5 M6 M8 For Wood Furniture Nut Tool Kit If you have any questions please contact us promptly