Material : UL approved PC/NYLON66, fireproof rank 94V-2. Have been detected by SGS, for environmentally friendly products. Uses: used for fixing parts for insulation. According to customer requirements of size and color production. The existing specifications: M3, M4, M5, M6, M8, M10，M12.     I Division specializing in the production of plastic screws, plastic nut, nylon nut