Description: 【High Quality Material】The spring washers set is made of premium stainless steel, which ensures outstanding durability and resistance to rust. 【6 Different Sizes】 The set includes a total of 160 pieces of spring washers in 6 different sizes (M3 40pcs, M4 30pcs, M5 30pcs, M6 25pcs, M8 15pcs, M10 20pcs), providing a wide range of options for all your needs. 【Resistance to Compression & High Temperature】 These washers have excellent compression and high temperature resistance, making them ideal for use in applications where high performance is required. 【Easy to Install】Conical Knurled Spring Washer, compact size and lightweight design, easy to install and suitable for a wide range of industrial and mechanical applications. 【Wide Applications】These Serrated Conical Spring Washer can be used in a variety of applications, including automotive, aerospace, construction, electronics, and more. Specification: Material: Stainless Steel Size Chart: Inner DiameterxOuter DiameterxHeight: M3: 3.2mmx7.8mmx0.9mm/0.13inchx0.31inchx0.04inch M4: 4.2mmx10mmx1.2mm/0.05inchx0.39inchx0.05inch M5: 5.2mmx12mmx1.5mm/0.20inchx0.47inchx0.06inch M6: 6.2mmx13.8mmx1.8mm/0.24inchx0.54inchx0.07inch M8: 8.2mmx18mmx2.1mm/0.32inchx0.71inchx0.08inch M10: 10.2mmx22mmx2.5mm/0.40inchx0.87inchx0.10inch Package Includes: 40pcs M3 Conical knurled Spring Washer 30pcs M4 Conical knurled Spring Washer 30pcs M5 Conical knurled Spring Washer 25pcs M6 Conical knurled Spring Washer 15pcs M8 Conical knurled Spring Washer 20pcs M10 Conical knurled Spring Washer Note: Please allow slightly errors due to manual measurement and different monitors.