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A rail 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.
Raw Material
Wiredrawing
Rod Cutting
Head Forming
Edge Cutting
Thread Rolling
Heating Treatment
Surface Finish
Inspection
Packing
Shipment
For types of sleeper screws, Ss series are the top hot sales, with various sizes available. In addition, square head screw spike, hexagon screw spike, double head screw spike, dog screw, timber screw, and others.
Size: 24×L, L=150mm to 270mm
Grade: 5.6, 8.8
Standard: ISO898-1, UIC864-1, NF F500-50
Surface finish: plain oiled, blasted oiled, oxide black, zinc plated, HDG, Dacromet, and sherardizing.
Mechanical properties: UTS550-700N/mm2, 15% elongation.
Standard: BS64 normal strength
Surface finish: plain oiled, blasted oiled, oxide black, zinc plated, HDG, Dacromet, and sherardizing.
Size: 24×185mm
Material: alloy steel
Grade: 8.8
Standard: GB/T3098.1
Surface finish: plain oiled, blasted oiled, oxide black, zinc plated, HDG, Dacromet, and sherardizing.
Size: Tr22×L, Tr23×L, L=115mm to 165mm, with step of 5mm
Grade: 4.6, 5.6, 8.8, 10.9
Standard: NF F500-15, UIC864-1, ISO898-1
Surface finish: plain oiled, blasted oiled, oxide black, zinc plated, HDG, Dacromet, sherardizing
Size: Dia. 15/16’’, 1’’, L as ordered 16×115, 19×115. Dia. 3/4’’ ×L, L=12’’
Material: low carbon steel Q235
Mechanical properties: Min tensile strength 740000psi
Surface finish: black oil, Wax dipped
Size: 25×190mm 24×180mm
Grade: 4.6, 5.6, 8.8
Standard: AS1085.18
Surface finish: HDG
Any other type can be customized according to customers’ drawings and grade.
