249pcs Acorn Head Hex Bolt Set Set M3 - M12 DIN1587 304 Bright Stainless Steel Finish Feature:1. Good Quality 304 Stainless Steel: These nuts are made of good quality 304 stainless steel, wear-resistant, corrosion-resistant, and rust-resistant2. For indoor, outdoor or humid environment: suitable for indoor, outdoor or humid environment, the product implementation standard is DIN15873. Easy to install or disassemble: standard hexagonal design, the opposite side length of the bottom nut is 11mm, height is 12mm, easy to install or dismantle4. For mechanical equipment: suitable for mechanical equipment, electronic equipment, communication equipment, lighting equipment, construction bridges, furniture decoration, etc.5. Variety of Models: The kit has many models for you to choose from, covering the most commonly used models, and can meet almost all your needsSpecification:Item Type: Acorn Hexagon Head NutsModel: M3; M4; M5; M6; M8; M10; M12Material: 304 Stainless SteelStandard: DIN1587 Bottom Nut Size:Opposite Side Length: Approx. 11mm/0,0,43 inch, Height: Approx. 12mm/0.47inSize:ModelM3M4M5M6M8M10M12Thread Diameter3mm/0.12in4mm/0.16in5mm/0.2in6mm/0.24in8mm/0.31in10mm/0.39in12mm/0.47inPitch0.5mm/0.02in0.7mm/0.028in0.8mm/0.031in1.0mm/0.04in1.25mm/0.05in1.50mm/0.06in1.75mm/0.07inNut Height7mm/0.28in8mm/0.31in10mm/0.39in12mm/0.47in15mm/0.59in18mm/0.71in22mm/0.87inwrench Caliber5.5mm / 0.22in7mm / 0.28in8mm / 0.31in10mm / 0.39in13mm / 0.51in17mm / 0.67in19mm / 0.75inList Packing:60 x M3 Nut80 x M4 Nut50 x M5 Nut40 x M6 Nut10 x M8 Nut5 x M10 Nut4 x M12 Nut