Spigot Truss vs Bolt Truss: Which Should You Choose?
Introduction
When purchasing an aluminum truss system, one of the first decisions buyers need to make is whether to choose a spigot truss or a bolt truss.
Both systems are manufactured from high-strength aluminum alloy and are widely used in concerts, exhibitions, churches, festivals, and temporary event structures.
The primary difference lies in the connection method rather than the truss itself.
Understanding these differences helps event organizers, rental companies, and contractors select the most suitable Event Truss System for their projects.
What Is a Bolt Truss?
A bolt truss uses bolts and nuts to connect individual truss sections.
This traditional connection system has been widely used for many years.
Advantages include:
Simple manufacturing
Lower purchase cost
Reliable structural performance
Easy replacement of hardware
Bolt trusses remain popular for permanent installations and projects where installation speed is less critical.
What Is a Spigot Truss?
A spigot truss uses specially designed spigots, connection pins, and retaining clips to join truss sections.
Instead of tightening bolts, installers simply insert the spigot and secure it with pins.
This connection method significantly improves installation efficiency while maintaining excellent structural strength.
Professional concert touring companies and rental businesses commonly use spigot trusses because they reduce labor time.
Installation Speed
One of the biggest differences between the two systems is installation efficiency.
Bolt Truss
Requires:
Bolts
Nuts
Tools
Tightening each connection
Installation generally takes longer.
Spigot Truss
Requires:
Spigots
Pins
R-clips
Connections can be completed quickly without tightening multiple bolts.
For projects involving frequent assembly and dismantling, spigot systems offer a significant advantage.
Appearance
Spigot trusses generally provide a cleaner appearance because the connection hardware is more integrated into the truss design.
Bolt trusses often have visible bolts extending outside the connection plates.
For concerts, exhibitions, television productions, and weddings where aesthetics matter, many customers prefer spigot trusses.
Load Capacity
Both systems can provide excellent structural performance when properly engineered.
Load capacity depends on factors such as:
Truss dimensions
Wall thickness
Material grade
Span length
Structural design
Manufacturing quality
The connection method alone does not determine the overall load capacity.
Engineering calculations remain the most important factor.
Cost Comparison
Bolt Truss
Advantages:
Lower manufacturing cost
Lower purchase price
Suitable for budget-sensitive projects
Spigot Truss
Advantages:
Faster installation
Lower labor costs
Improved working efficiency
Better appearance
Although spigot trusses often have a higher initial purchase price, they may reduce long-term operating costs for rental companies through faster assembly and dismantling.
Typical Applications
Bolt Truss
Commonly used for:
Permanent installations
Churches
Schools
Small event venues
Budget-conscious projects
Spigot Truss
Commonly used for:
Concert tours
Rental companies
Festivals
Television studios
Exhibition halls
Outdoor events
Which One Should You Choose?
Choose a bolt truss if you need:
Lower initial investment
Permanent installation
Occasional use
Choose a spigot truss if you need:
Frequent transportation
Fast installation
Professional touring
Rental applications
Large event production
Final Thoughts
Both bolt trusses and spigot trusses are widely used throughout the event industry.
Neither system is universally better—the ideal choice depends on your budget, installation frequency, labor costs, and project requirements.
For professional event production where speed and efficiency are critical, spigot trusses have become the preferred solution.
For projects where lower purchase cost is the primary consideration, bolt trusses remain an excellent option.
Understanding these differences allows buyers to choose the most appropriate Event Truss System for long-term success.
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