Check the listing for details. 5Pack M8 Multi-Grip Rivet Nuts Pre-Bulbed Insert Nut 304 Stainless Steel. Condition: New. Listed at 18.58 USD. Description:1. Material: Multi grip rivet nut is made of 304 stainless steel, pickling passivation surface treatment, high hardness, oxidation resistance, rust resistance and corrosion resistance, and durability.2. Easy to use: Drill a suitable hole according to the size, then insert the pre-bulbed rivet nut and tighten the locking nut with the rivet tool.3. Application: Rivet nuts can be firmly fixed on thin sheet metal to provide tight screw locking force, such as sheet metal or non-metallic materials, plastics, wood, etc. Widely used in industry, construction, furniture, electrical appliances, equipment, and so on.Specifications:Material: 304 Stainless SteelFinish: Pickling PassivationPerformance Grade: 4.8Thread Diameter: M8Pitch: 1.25mmTotal Length: 30.5mm / 1.2"Head Size: 19 x 1.6mm / 0.75" x 0.