Railroad Spike Bolt

The railroad bolt spike is a dedicated heavy-duty threaded fastener for fixing steel rails to concrete and wooden sleepers. Its integrated structure consists of a waterproof conical protective cap, pressure distributing washer, smooth transition shank and deep self-tapping spiral threads.

Manufactured from high tensile carbon steel through integral forging, the spike boasts outstanding pull-out resistance and shear capacity to sustain continuous vibration and impact loads generated by running trains. Full hot-dip galvanizing treatment covers the entire surface, creating a dense thick zinc layer that resists rain erosion, snow corrosion and coastal salt mist for long-term outdoor railway operation.

The built-in washer spreads compression force evenly on rail base plates to prevent indentation and deformation of sleepers. The top conical cap shields the connection gap from water and dust ingress, slowing down rust aging at contact points. Wide deep self-tapping threads bite tightly into sleeper substrates without pre-drilling, forming stable locking force that hardly loosens under dynamic load.

Railroad bolt spikes are extensively applied on conventional railway lines, high-speed passenger rails, underground subway projects and mine haulage tracks. Unlike flat forged rail spikes, this bolt-type threaded design delivers superior holding strength and allows easy removal during routine track maintenance and rail replacement.

We support full custom production services, covering adjustable spike overall length, thread pitch, shank diameter and galvanized layer thickness as per railway construction drawings. Laser marking and export bulk packaging are available for railway hardware suppliers and track engineering contractors.

Every batch of railroad bolt spikes undergoes strict factory testing before shipment, including pull-out load test, material hardness test, zinc coating thickness detection and thread profile inspection, to guarantee consistent anti-loosening fastening performance and extended service life under severe outdoor track conditions.