●●●Hilitchi 128-Pcs High Quality 304 Stainless Steel Belleville Washer Assortment Kit 【Specifications】 - Washer Type: Belleville Washer - Sizes: M3 M4 M5 M6 M8 M10 M12【Metric, please See Picture 2 for Specific Dimensional Size】 - Material: 304 Stainless Steel - Color: Silver Tone 【Features】 - Made of 304 stainless steel material, very good corrosion resistance - Belleville spring washers are especially suited for applications requiring high spring rates in restricted space - they will occupy only a fraction of the compressed height space of a traditional wire spring. - The Belleville washer also called cupped spring washer or conical washer,is a type of spring shaped like a washer.it has a frusto-conical shape which gives the washer a spring characteristic.(from wiki). - This set is organized by size / type in a transparent storage case for quick access and protection 【Package Included】 - M3 - 30Pcs - M4 - 30Pcs - M5 - 20Pcs - M6 - 20Pcs - M8 - 10Pcs - M10 - 10Pcs - M12 - 8Pcs 【Package Quantity: 128pcs】 This set is organized by size in a transparent storage case for quick access and protection. Hilitchi is a professional company of fasteners. We sell steel, stainless steel and brass screws, self tapping screws, self drilling screws, dry wall screws, hex nuts, hex bolts, rivets, anchors, nails, flat washers, spring washers, couplings and fixings.