South American 4.6 Class Screw Spike 

South American Screw Spike, also called sleeper screw, rail screw or lag bolt, is a medium or large metal screw used to fasten a rail base plate or rail. Such spikes are always fastened into holes bored into the tie sleeper, sometimes together with imbedded plastic dowels, popularly used for rails with wooden sleepers, especially in America and Canada.  Basic information of South American Screw Spike 1.Description：Screw spikes 2.Size: 23x105mm/23X110mm 3.Material: 4.6 to UIC864-1 4.Finish: Plain finished 5.Reference project Supplied 2 million pcs to South America Photos of South American Screw Spike Main styles of Screw spike for different market * North America-High strength screw spikes 1.Description：High strength screw spikes 2. Size: 1x5-1/8”, 1x6”, 1x7” 3. Specification: high strength, AREMA 2012…