What is a square head screw used for?

Jan 27, 2026 Leave a message

A rail spike is a steel pin or screw-type fastener that secures rails onto sleepers, preventing uplift, lateral slip, and longitudinal creep while maintaining designed track geometry. Proper spike performance ensures stable rail operation and reduces maintenance frequency. GNEE RAIL supplies spikes suitable for GB rails from 8–60 kg/m, UIC50/54/60, DIN536 A55–A120, QU70–QU120, JIS rails, AS1085 rails, BS11, and AREMA/ASCE sections, along with services including project matching, packaging, and logistics coordination.

 

rail spike

 

What is a square head screw used for?

 

A rail square head screw spike is primarily used to securely fasten railway tracks and baseplates to timber or concrete sleepers, offering over twice the holding power of conventional dog spikes. These high-strength, threaded fasteners prevent vertical and lateral rail movement, ensuring structural integrity for heavy-load and high-speed rail applications.

 

rail fasteners

 

Type Specification Material Surface Standard
Square head screw spike M22*145 45# Natural UIC
55Q Zinc AREMA
M22*155 Q235 Paint DIN
M22*165 or Oil GB
M22*185 According to your needs. According to your needs. or
M22*195     According to your drawings or samples.
Other kinds      

 

Key Uses and Applications:

 

rail fasteners

 

  • Fastening System: They secure rails to sleepers, often in combination with plastic ferrules cast into concrete sleepers or screwed directly into bored holes in wooden ties.

 

  • Preventing Movement: They hold down rail baseplates to maintain gauge and reduce rail creep.

 

  • High-Load Applications: Due to their superior tensile strength and resistance to loosening, they are ideal for heavy-haul railways.

 

  • Versatility: Used in various environments, including railway turnouts, bridges, and in industrial settings.

 

Features and Advantages:

 

 

  • Superior Grip: The threads provide higher anchorage capacity (up to 40 kN for hardwood and 60 kN for concrete) compared to hammered spikes.

 

  • Components: Often used with spring washers to maintain constant clamping force.

 

  • Material: Usually manufactured from high-strength steel (e.g., Q235, 45#, 55#).

 

Material Strength Grade Length Range Tensile Strength Surface Treatment Application
Q235 Carbon Steel 4.6 / 5.6 100–250 mm ≥ 370 MPa Plain, Oxide Black, HDG Light railway, mining tracks
35# Carbon Steel 4.6 / 5.6 100–250 mm ≥ 450 MPa Zinc, Sherardizing Conventional timber sleeper tracks
45# Carbon Steel 5.6 120–300 mm ≥ 520 MPa HDG, Dacromet Heavy-duty industrial and mainline tracks
40Cr Alloy Steel 5.6 / 8.8 120–300 mm ≥ 750 MPa Dacromet, Zinc Crane rails, high-load applications

 

  • Design: Features a square head, which is easy to tighten with manual or power tools, and can be removed for maintenance or reuse.

 

Is a spike a fastener?

 

Yes, a spike is considered a fastener, specifically a heavy-duty, large nail or rod designed to join heavy materials, such as timber or railroad ties, together. Similar to bolts and screws, they provide significant holding power for structural applications, acting as a rigid, metal fastening item.
Key details about spikes as fasteners include:

 

rail spike

 

 

  • Types: They range from common rail spikes to screw spikes (which feature threads for higher, up to 2x, retention).

 

  • Application: Commonly used in railroad construction, heavy timber construction, docks, and to secure materials into concrete.

 

  • Structure: They consist of a long, thick metal shank with a pointed end for penetration and a head for driving.

 

  • Function: They are driven or screwed into materials to prevent lateral and vertical movement.

 

Rail spike, one of the products of GNEE RAIL , is used to connect the steel rail with rail sleeper or bind the rail plate and rail sleeper together.As a professional rail fasteners supplier,GNEE RAIL offers different kinds of railway fasteners to meet client's requirements, such as Elastic Rail Clip and Clamp, Plastic Dowel, High Tensile Track Bolt with Nut, Rail Base(Tie) Plate, Rail Fish Plate, Railway Shoulder(Insert), Fish Bolt, Railroad Rubber and EVA Pad, etc. Samples and drawings provided by customer, we will manufacture qualified products accordingly.

 

Click here to obtain the detailed product catalog of GNEE RAIL.