Zhenhai Yongding Fastener is a railway bolts manufacturers, which mainly produces railway bolts and Nuts. Railway bolts usually consist of three parts, including a threaded bolt, lug or nut and lock washer. In addition, the washer of the railway bolt can prevent displacement and loosening, which also fundamentally solves the occurrence of severe vibration. The country has very high requirements for railway bolts and nuts, and small bolts are indispensable for railway tracks. YongDing railway bolts have high strength, sturdiness and durability, and support wholesale purchase.