Size and Quantity】100 pieces zinc-plated carbon steel rivet nuts, M6, 12 mm x 15 mm. 【Sturdy and Durable】Metric flat thread rivet nuts are made of high-quality zinc-plated carbon steel. Threaded insert nuts have superior rust resistance, ensuring long-term use. 【Deep Thread】The assortment of threaded insert nuts features a deep internal thread, which is effective for fastening and anti-slip. Threaded rivets facilitate insertion into the part. 【Excellent Installation Tools】Excellent threaded nut insert installation tools to make your work easier and faster. 【Widely Used】M5 threaded insert rivet nuts can be easily installed in many different types of materials, including steel, plastic, and fiberglass.