Screw Spike

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.

Screw Spike

Screw 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.

Production Process of the Railway Screw Spikes:

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.

SS25, SS35, SS36 Sleeper screw

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.

AS screw spike

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.

24×185mm alloy steel screw spike

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.

Tr thread screw

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