The plain railway sleeper screw is a commonly used railway fastener designed to securely fix rails to wooden or concrete sleepers. It is made from high strength steel, providing excellent tensile strength and toughness to withstand dynamic loads during train operations. For the USA market, sleeper screw spikes are produced to ASTM A66-87, with a cold bending test of 90 degrees without cracks, and standard strength of 65000 PSI or high strength of 100000 PSI.
Available Sizes in Inch Series
For the American market, plain sleeper screws are available in diameters of 3/4 inch, 7/8 inch, and 15/16 inch, with lengths of 5-1/2 inch, 6 inch, 7 inch, 8 inch, and 10 inch. Grades cover 4.6, 5.6, and 8.8, and materials include Q235, 35 steel, and 45 steel. Surface treatments are plain oiled, black painting, zinc, and hot dip galvanizing. The minimum order quantity is 5000 pieces, with packing in 25 kg plastic bags on wooden pallets or per client requirement.
Ss Series Sleeper Screw Dimensions
| Item | Type | Specification | Weight kg |
| Ss series sleeper screw | Ss1/130 | M22 by 130 mm | 0.451 |
| Ss1/150 | M22 by 150 mm | 0.478 | |
| Ss2/180 | M22 by 150 mm | 0.595 | |
| Ss5/150 | M24 by 150 mm | 0.545 | |
| Ss6/150 | M26 by 150 mm | 0.702 | |
| Ss7/180 | M24 by 180 mm | 0.636 | |
| Ss8/140 | M24 by 140 mm | 0.528 | |
| Ss8/150 | M24 by 150 mm | 0.548 |
Square Head Screw Spikes
Square head screw spikes are produced in sizes from M22 by 145 mm to M22 by 195 mm. Materials include 45 steel, 55Q, and Q235, with surfaces of natural, zinc, paint, and oil. The standards cover UIC, AREMA, DIN, and GB. The square head seats positively on the tie plate and is driven with a standard wrench.
Hexagon Screw Spike Mechanical Properties
| Grade | Material | Tensile Strength | Yield Strength | Elongation |
| 4.6 | Q235 | 400 MPa or more | 240 MPa or more | 22 percent or more |
| 5.6 | 35 steel | 500 MPa or more | 300 MPa or more | 20 percent or more |
| 8.8 | 45 steel | 800 MPa or more | 640 MPa or more | 12 percent or more |
| 10.9 | 40Cr | 1000 MPa or more | 900 MPa or more | 9 percent or more |
All grades pass a 90 degree cold bending test without cracks. Surfaces include plain oiled, oxide black, zinc, hot dip galvanizing, wax, bitumen, dacromet, and sherardizing.
Double-Head Screw Spikes
Double-head screw spikes have a screw head at both ends and a common size of 23 mm by 174 mm, in grades 4.6 to 10.9. Raw materials include 35 steel, Q235, and 45 steel, with surface treatments of plain oiled, bluing, zinc, and hot dip galvanizing. They are used in fastening systems popular in Africa and must withstand bending of 30 degrees or more without cracks.
Application and Selection Guidance
Select the spike diameter and length according to the sleeper type, the baseplate thickness, and the fastening system. For concrete sleepers, confirm the plastic dowel size matches the spike diameter. For the USA market, choose standard 65000 PSI or high strength 100000 PSI according to the line load. Specify the surface finish by environment: plain oiled for dry inland service, hot dip galvanizing for coastal and tunnel service. Custom production for special dimensions or higher strength materials is available.
Frequently Asked Questions
What is a plain railway sleeper screw? It is a railway fastener used to securely fix rails to wooden or concrete sleepers, made of high-strength steel for excellent tensile strength and toughness.
What are the available inch sizes for the USA market? Diameters are 3/4 inch, 7/8 inch and 15/16 inch, with lengths from 5-1/2 inch to 10 inch.
What strength options are available under ASTM A66-87? Standard strength of 65000 PSI and high strength of 100000 PSI are available, with a 90 degree cold bending test without cracks.
What is the specification of Ss8/150? Ss8/150 is an M24 by 150 mm sleeper screw with a weight of 0.548 kg per piece.
What surface treatments are offered for sleeper screws? Plain oiled, black painting, zinc, hot-dip galvanizing, wax, bitumen, Dacromet and sherardizing finishes are offered.
