Description
Technical Parameters
Types of Railway Bolts
| Category | Term | Description |
|---|---|---|
| Types of Bolts | Track Bolt (Rail Bolt) | Fastens rails to sleepers (ties). |
| Fish Bolt | Connects rail ends using fishplates. | |
| High-Strength Bolt | Used for heavy-load applications. | |
| Coach Screw (Lag Bolt) | Wood screw for wooden sleepers. | |
| Shoulder Bolt | Provides precise alignment. | |
| Toggle Bolt | Used for hollow structures. | |
| Components | Head | Bolt top (hex, square, round). |
| Shank | Smooth or threaded body. | |
| Thread | Helical ridge for tightening. | |
| Nut | Hex nut, lock nut, etc. | |
| Washer | Spring washer, flat washer. | |
| Materials | Carbon Steel | Standard strength. |
| Stainless Steel | Corrosion-resistant. | |
| Galvanized Coating | Zinc-coated for rust prevention. |
Railway Bolt Applications
| Bolt Type | Application | Key Features |
|---|---|---|
| Track Bolt (Rail Bolt) | Fastens rails to sleepers (ties) in standard track systems. | Hex head, high shear strength, corrosion-resistant coatings. |
| Fish Bolt | Joins rail ends together with fishplates (joint bars). | Precision threads, high tensile strength, often used with nuts and washers. |
| High-Strength Bolt | Critical load areas like bridges, switches, and heavy-duty tracks. | Heat-treated, meets ASTM/EN standards, vibration-resistant. |
| Coach Screw (Lag Bolt) | Secures rails to wooden sleepers. | Coarse threads, self-tapping, galvanized for outdoor use. |
| Shoulder Bolt | Used in rail joints or components requiring precise alignment. | Non-threaded shoulder for accurate positioning. |
| Toggle Bolt | Anchoring rails to hollow or lightweight structures (e.g., platform fixtures). | Expandable sleeve for grip in hollow materials. |
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