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Railroad Frog Bolts
Product Overview Railroad frog bolts are specialized high-strength fasteners designed specifically for railway frog and crossing assemblies. These critical components provide secure, vibration-resistant connections in the most demanding trackwork areas where standard bolts cannot withstand the...
Features
Product Overview
Railroad frog bolts are specialized high-strength fasteners designed specifically for railway frog and crossing assemblies. These critical components provide secure, vibration-resistant connections in the most demanding trackwork areas where standard bolts cannot withstand the extreme dynamic loads.
Technical Specifications
| Parameter | Specification Range |
|---|---|
| Diameter | 3/4" (M20) to 1-1/4" (M30) |
| Length | 4" to 12" (100-300mm) |
| Thread Pitch | 8UN or Metric coarse |
| Proof Load | 830 MPa (minimum) |
| Yield Strength | 940 MPa (minimum) |
| Torque Values | 450-1200 N·m |
Specialized Designs
Shouldered Frog Bolts
Precision-machined shoulder for alignment
Reduced shank diameter for elasticity
Used in spring rail frogs
Countersunk Frog Bolts
82° countersunk head
For flush mounting in crossing surfaces
Extra-deep drive slots
Tapered Shank Bolts
Gradual diameter reduction
Accommodates worn casting holes
Maintains clamping force
Maintenance Schedule
| Interval | Action Required |
|---|---|
| Monthly | Visual inspection |
| Quarterly | Torque verification |
| Annually | Ultrasonic testing |
| 5 Years | Replacement cycle |
Quality Assurance
FAQ
Q: Is it a manufacturer or a distributor?
A: We are a factory.
Q: What is the minimum order quantity
A: 5,000 sets. For more details, please consult the customer service.
Q: How long is the delivery time?
A: 8-12 weeks (standard configuration)
Q: For project specifications, provide:
A: Frog casting drawings
Environmental conditions
Required quantities/delivery schedule
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