A screw spik is also called a rail screw or sleeper screw, it is used to fix the tie plate or fasten the rail to the sleeper with the help of a plastic dowel. Generally speaking, screw spikes are mostly used in heavy rail applications, including square-head screw spike, double-head screw spike, hexagon screw spike, Ss series sleeper screw. Screw spikes are also called rail screws, track screws, sleeper screws. Product: Screw Spikes Raw Material: Alloy Steel 40Cr, 42CrMo, 35CrMo; Steel Q235, C35, C45 Grade: 3.6/4.6/4.8/5.6/5.8/6.8/8.8/10.9/12.9 Surface: Plain, Oxide Black, Dacromet, or other upon requirements Standards: UIC, AREMA, BS, RDSO, DIN, JIS, ISCR, GB, VALEC, GOSTR- EASC, GB/T, or other requirements Weight: Depend on different models Dimension: Depend on different models Package: Move bag, Box, or other requirements Delivery: Depends on the order Item Type Specification Weight/kg Ss series Sleeper Screw Ss 1/130 M22*130 0.451 Ss 1/150 M22*150 0.478 Ss 2/180 M22*150 0.595 Ss 5/150 M24*150 0.545 Ss 6/150 M26*150 0.702 Ss 7/180 M24*180 0.636 Ss 8/140 M24*140 0.528 Ss 8/150 M24*150 0.54 Squarehead screw spike M22*145 M22*155 M22*165 M22*185 M22*195 Anyang Railway Equipment Co., Ltd has an automatic and manual screw production lines, which are used to produce various specifications of dog spikes, hexagon screws or screw spikes with square heads.