Rail screw spikes (also called sleeper screws or square head rail bolts) are medium or large metal screws used to fasten rail tie plates and rail track on the wooden or concrete sleepers.
The screw spikes are always fixed in the holes drilled in the wooden sleepers and fixed together with the plastic dowels embedded in the concrete sleepers. Railway screw Spikes are usually used for wooden sleepers, especially in the United States and Canada.
According to specific requirements such as length, diameter, drive head and thread profile, rail screw spikes can usually be divided into four categories.
1. Ss series sleeper screws 2. Square head rail screws 3. Hexagon rail screws 4. Double head rail screws.
The commonly used screw spikes are as follows:
1. SS25, SS35, SS36 Sleeper screw 2. AS screw spike 3. 24×185mm alloy steel screw spike 4. Tr thread screw 5. Timber screw 6. Chex screw spike,etc
1. 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.
2. 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.
3. 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.
4. 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
5. Timber screw
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
6. Chex screw spike
Size: 25×190mm 24×180mm
Grade: 4.6, 5.6, 8.8
Standard: AS1085.18
Surface finish: HDG
1. Raw material 2. Wire drawing 3. Wire drawing cutting 4. Head shaping 5. Edge cutting 6. Wire rolling 7. Heat treatment 8. Surface treatment 9. Final inspection 10. Packaging 11. Shipping
As a professional manufacturer of rail screw spikes in China. Kingrail Parts can customize railway screw spikes according to customers' drawings and requirements.
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