【Sturdy and Durable】: Metric Flat Threaded Rivet Nuts are made of high quality stainless steel. They have superior rust resistance, which can ensure a long time of use. 【Deep Thread】: These rivet nuts are knurled with deep thread inside, which are effective in fixing and non-slip. The knurled nut facilitates insertion into the workpiece. 【Excellent Installation Tools】:Excellent rivet nut installation tools to make the job easier and faster. 【Size and Quantity】: Type: M6; Package Quantity: 100pcs. 【Widely Used】: Crimp nuts can be easily installed in many types of materials, including steel, plastic and fiberglass.