181 pcs. Hardware Nuts 6 Sizes High Hardness Nylon Insert Low Volume Stainless Steel M4 - M12 Fastening Nuts Feature:1. Nylon Insert: The lock nut is made of 304 stainless steel and nylon, and the nylon insert is threaded to prevent loosening.2. 6 Sizes: Fastening nuts package includes 7 sizes, including: 45 x M4, 45 x M5, 45 x M6, 20 x M8, 12 x M10, 14 x M12 to meet your different needs.3. Application: fastening nuts are components of folding beds, cabinets, mining machinery, electric hair trimmer, motors, textile machinery, etc.4. Lightweight and portable: The hardware nuts are lightweight, small, easy to carry and store, convenient and quick to use, and stable in performance.5. Stainless steel: Hardware nuts are made of stainless steel, high hardness, wear-resistant and durable, and can be used for a long time. Specification:Item Type: Hardware NutsMaterial: 304 Stainless SteelProduct Model: M4, M5, M6, M8, M10, M12M4: Thread Diameter Approx. 4mm/0.16inch, Pitch Approx. 0.7mm/0.03inch, Nut Height Approx. 5mm/0.20inch, Wrench Diameter Approx. 7mm/0.28inM5: Thread Diameter Approx. 5mm/0.20inch, Pitch Approx. 0.8mm/0.03inch, Nut Height Approx. 5mm/0.20inch, Wrench Diameter Approx. 8mm/0.31inM6: thread diameter approx. 6mm/0.24 inch, pitch approx. 1.0mm/0.04 inch, nut height approx. 6mm/0.24 inch, wrench diameter approx. 10mm/0.39inM8: thread diameter approx. 8mm/0.31 inch, pitch approx. 1.25mm/0.05 inch, nut height approx. 8mm/0.31 inch, wrench diameter approx. 13mm / 0.51inM10: thread diameter approx. 10mm/0.39 inch, pitch approx. 1.50mm/0.06 inch, nut height approx. 10mm/0.39 inch, wrench diameter approx. 17mm / 0.67inM12: thread diameter approx. 12mm / 0.47inch, pitch approx. 1.75mm/0.07in, Nut Height Approx. 12mm/0.47in, Wrench Diameter Approx. 19mm/0.75inExecute Standard: DIN 985Packing List:45 x M4 Nuts45 x M5 Nuts45 x M6 Nuts20 x M8 Nuts12 x M10 Nuts14 x M12 Nuts