Rivet Types
Rivet Type Selection
The choice of rivet type for a given application is dependent on numerous performance criteria - see Joint Development for details. A rivet is selected, in conjunction with appropriate tooling, to match the application characteristics such as the examples listed below:
Typical Application Characteristics | Examples |
---|---|
Material Types | Aluminium, Steel, Plastic, Composite |
Material - High Ductility | Cold rolled steel sheet, Alu Sheet |
Material - Reduced Ductility | Hot rolled steel, Extrusions, Castings |
Material - Low Tensile Properties | Mild steel, Non ferrous alloys, Plastic |
Material - High Tensile Properties | HSLA steel, DP & TRIP steels |
Total Joint Thickness | 1mm to 6mm (Steel) 1mm to 10mm(Alu) |
Mixed Material Combinations | Plastics to metal, Alu to steel |
Structural | Vehicles, Buildings |
Non-Structural | Furniture, Cabinets, Attachments |
Head Styles
Head styles are selected on the basis of either functional requirements or aesthetic appeal. Functional requirements may be:
- Head flushness (level with material surface)
- Shear, peel and fatigue strength
- Locator or mechanical stop
- Large bearing surface
- Attachment points for secondary parts
Countersunk Head
Benefits:
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Flat, Pan and Dome Head
Benefits:
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Special Head Styles
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Special rivet head styles are supplied when there is a need to combine the functions of the self pierce rivet and an additional feature. |
Rivet Length & Stem Diameter
Rivet length is always matched to the stack thickness to be fastened. A given rivet length will cover a range of material stacks. Testing is carried out to determine the suitability of the rivet length for the material and thickness range being riveted. Henrob offers rivets in lengths of 4 to 14mm. | ![]() |
There are two standard diameters, 3mm and 5mm. The criteria for selecting the appropriate rivet diameter includes:
- Required strength of joint
- Available access to joining area
- Material thickness and hardness