WJ-12 fastener

WJ-12 fastener is a kind of double block or long tie buried ballastless track fastener used in heavy haul railway. It is composed of T-bolt, flat washer, nut, spring bar, insulated gauge block, gauge baffle, underrail cushion plate, iron cushion plate, elastic cushion plate under iron cushion plate, preset height adjusting cushion plate and embedded iron base. In addition, in order to adjust the high and low position of the rail, the gauge baffle is also included.