Nylon screws are used in industrial ways for fastening purposes. Due to the special nylon material, it will not interfere with the signal of electronic devices.AdvantageThe screws are made of good quality nylon material, will not interfere with the signal of electronic devices, are durable and strong, anti-corrosion, and lightweight.Instruction Easy Installation, You can use a standard wrench or socket set for installation.NOTE: Plastic head screws are suitable for use in wet, alkaline, and acidic environments.