600pcs Hex Nut Flat Washer M3 M4 M5 M6 Set Set With Tweezer Wrench Feature:1. Total 600pcs: Hex bolts, nuts and washers in various sizes are included, and the total quantity is up to 600pcs.2. Simpler fastening: 4 pcs hex wrench I tweezers 1 pc. They are included, which will fix the mechanical parts firmly.3. Practical applications: it allows for wide use in household and office appliances, furniture, machinery and other fields.4. Great Material: The use of carbon steel high-quality material, very durable with corrosion, rust and long-term use.5. Easier storage: The plastic box will keep all the parts neatly organized, greatly simplifying daily carrying. Specification:Item Type: Hex Bolt Bolt Model: Approx. M3 x 8mm/0.31 in; M3 x 12mm/0.47 in; M3 x 16mm/0.63 in; M3 x 20mm/0.79 inchM4 x 8mm/0.31 in; M4 x 12mm/0.47 in; M4 x 16mm/0.63 in; M4 x 20mm/0.79 inchM5 x 8mm/0.31 inch; M5 x 12mm/0.47 inch; M5 x 16mm/0.63 in; M5 x 20mm/0.79 inchM6 x 8mm/0.31 in; M6 x 12mm/0.47 inch; M6 x 16mm/0.63 in; M6 x 20mm/0.79 inch Screw Size:Worm ModelM3M4M5M6Thread Diameter (Approx)3mm / 0.12in4mm / 0.16in5mm / 0.2in6mm / 0.24inStroke (Approx.) 0.5mm / 0.02in0.7mm / 0.028in0.8mm / 0.03in1.0mm / 0.04inHead Diameter (Approx.) 5.7mm / 0.22in7.5mm / 0.3in9.5mm / 0.37in10.5mm / 0.41inHead Height (Approx.) 1.65mm / 0.06in2.2mm / 0.09in2.75mm / 0.11in3.3mm / 0.13inWrench Size (Approx.) 2mm / 0.08in2.5mm / 0.1in3mm / 0.12in4mm / 0.16inThin Lock Nut Model: M3, M4, M5, M6Half Lock Hex Nut ModelThread Diameter (Approx.) Pitch (Approx.) Nut Height (Approx.) Wrench Size (Approx.) M33mm / 0.12in0.5mm / 0.02in1.8mm / 0.07in5.5mm / 0.22inM44mm / 0.16in0.7mm / 0.028in2.2mm / 0.09in7mm / 0.28inM55mm / 0.2in0.8mm / 0.03in2.7mm / 0.11in8mm / 0.31inM66mm / 0.24in1.0mm / 0.04in3.2mm / 0.13in10mm / 0.39inWashing Machine Model: M3, M4, M5, M6Washer Model Thickness (Approx.) ID (Approx.) M30.5mm / 0.02in3.2mm / 0.13in7mm / 0.28inM40.M40.8mm/0.03in4.3mm/0.17in9mm/0.35inM51.0mm/0.04in5.3mm/0.21in10mm/0.39inM61.6mm/0.06in6.4mm/0.25in12mm/0.47inProduct Material: Carbon SteelProduct Performance Standard: ISO7380Packing List:4 x Hex Wrench1 x Tweezers15 x M3 x 8mm Screw15 x M3 x 12mm Screw15 x M3 x 16mm Screw15 x M3 x 20mm15 x M4 x 8mm Screw15 x M4 x 12mm Screw15 x M4 x 16mm Screw15 x M4 x 20mm Screw10 x M5 x 8mm Screw10 x M5 x Screw 12mm10 x M5 x 16mm Screw10 x M5 x 20mm10 x M6 x 8mm Screw10 x M6 x 12mm10 x M6 x 16mm Screw10 x M6 x 20mm60 x M3 Washer60 x M4 Washer40 x M5 Washer40 x M6 Washer60 x M3 Nut60 x M4 Nut40 x M5 Nut40 x M6 Nut