Rivet Size Calculator
Calculate proper rivet diameter and length for structural fastening applications
Calculate Rivet Size Requirements
The thickness of the thickest material you need to fasten (determines minimum rivet diameter)
The sum of all material thicknesses to be fastened together (determines rivet length)
Button heads for general/boiler construction, countersunk for lightweight/flush applications
Standard structural applications (Multiplier: 1.5 for ≤20mm, 1.6 for >20mm)
Rivet Size Recommendations
⚠️ Structural Fastening Safety Warning
• This calculator provides estimates for standard rivet sizing applications
• Always consult a licensed structural engineer for critical load-bearing connections
• Follow applicable building codes, AISC standards, and manufacturer specifications
• Consider material properties, environmental conditions, and dynamic loading
• Verify rivet installation procedures and quality control requirements
• Improperly sized rivets can lead to catastrophic joint failure
Example Calculation: Steel Plate Riveting
Project Specifications
Application: General structural steel connection
Thickest Plate: 6.0mm steel plate
Total Thickness: 12.0mm (two 6mm plates)
Head Type: Button head rivet
Use: General construction
Rivet Sizing Calculation
• Minimum Diameter = 6.0mm × 3 = 18.0mm
• Standard Size Selection = 19.05mm (3/4")
• Multiplier Constant = 1.5 (≤20mm, general construction)
• Shank Allowance = 19.05mm × 1.5 = 28.6mm
• Required Length = 12.0mm + 28.6mm = 40.6mm
Result: Use 3/4" × 1⅝" button head rivet
Standard Rivet Sizes
Common Sizes (Diameter)
Rivet Types
Button Head
Protruding dome head, general construction use
Countersunk
Flush head for smooth surfaces, lightweight use
Blind Rivets
One-sided installation, "pop" rivets
Structural
High-strength rivets for load-bearing joints
Sizing Rules
Understanding Rivet Sizing Calculations
What are Rivets?
Rivets are permanent mechanical fasteners consisting of a smooth cylindrical shaft with a head on one end. During installation, the tail end is deformed to create another head, securely joining materials together. They're used in aircraft, bridges, ships, and general construction.
Rivet Sizing Formula
- •Minimum Diameter: Dmin = tmax × 3
- •Shank Allowance: A = D × c
- •Required Length: L = S + A
- •Hole Diameter: D + 0.15-0.3mm clearance
Multiplier Constants (c)
Critical Considerations
Material Compatibility
Match rivet material to base materials (aluminum, steel, stainless, etc.)
Installation Process
Requires proper tools, hole preparation, and forming techniques
Load Requirements
Consider shear, tension, and fatigue loads in design calculations