Feature: 1. [SPECIFICATION] The kit includes 290pcs nylon lock nuts and washers, with M4 M5 M6 M8 M10 M12 model, sufficient in quantity. 2. [304 STAINLESS STEEL] Made of excellent 304 stainless steel, with high toughness and good heat and cold resistance. 3. [NYLON LOCK NUT] These hex lock nuts use nylon material inside, which has high mechanical strength and prevents thread loosening. 4. [WIDE APPLICATION] Lock nuts are good parts for folding beds, cabinets, mining machines, electric hair clippers, motors, textile machines, etc. 5. [STANDARD SIZES] These nuts and flat washers have standard sizes and are widely used in furniture, electronic repairs and DIY projects. Specification: Item Type: Nuts Washers Assortment Set Washer Model: M4; M5; M6; M8; M10; M12 Product Standard: DIN125 Product Material: 304 Stainless Steel Washer Model Thickness Inner Diameter Outer Diameter M4 0.8mm / 0.03in 4.3mm / 0.17in 9mm / 0.35in M5 1.0mm / 0.04in 5.3mm / 0.21in 10mm / 0.39in M6 1.6mm / 0.06in 6.4mm / 0.25in 12mm / 0.47in M8 1.6mm / 0.06in 8.4mm / 0.33in 16mm / 0.63in M10 2mm / 0.08in 10.5mm / 0.41in 20mm / 0.79in M12 2.5mm / 0.1in 13mm / 0.51in 24mm / 0.94in Nylon Nut Model: M4; M5; M6; M8; M10; M12 Product Standard: DIN985 Product Material: 304 Stainless Steel Nut Model Thread Diameter Thread Pitch Nut Height Wrench Caliber M4 4mm / 0.16in 0.7mm / 0.03in 5mm / 0.2in 7mm / 0.28in M5 5mm / 0.2in 0.8mm / 0.03in 5mm / 0.2in 8mm / 0.31in M6 6mm / 0.24in 1.0mm / 0.04in 6mm / 0.24in 10mm / 0.39in M8 8mm / 0.31in 1.25mm / 0.05in 8mm / 0.31in 13mm / 0.51in M10 10mm / 0.39in 1.50mm / 0.06in 10mm / 0.39in 17mm / 0.67in M12 12mm / 0.47in 1.75mm / 0.07in 12mm / 0.47in 19mm / 0.75in . Package List: 40 x M4 Washers35 x M5 Washers35 x M6 Washers20 x M8 Washers10 x M10 Washers5 x M12 Washers40 x M4 Nylon Nuts35 x M5 Nylon Nuts35 x M6 Nylon Nuts20 x M8 Nylon Nuts10 x M10 Nylon Nuts5 x M12 Nylon Nuts