The ESSENTRA / RICHCO part SR-4120B is a round snap push-in rivet made of black UL94 V-2 nylon material. It is designed to provide a secure and reliable fastening solution for various applications. This rivet is compatible with a hole diameter range of 4.1 to 4.2 mm (0.161 to 0.165 in) and a panel thickness range of 9 to 10.5 mm (0.354 to 0.413 in). The anchor length of this rivet is 12 mm (0.472 in), ensuring a strong and durable hold. Perfect for industries such as automotive, electronics, and more, this rivet offers easy installation and excellent performance.