Semi-Tubular Rivets

Material Shank Diameter (mm)
3
4
4.8
6
6.35
STEEL
ALUMINIUM
COPPER  
BRASS
STAINLESS STEEL        

 

Plating
Zinc, Nickel

Head Shapes

Mushroom

Oval

Flat

CSK

Round

On your mobile, drag the table below to the left and right to see the information.

Recommended Rivet Length

Shank diameter
(mm)
Rivet length
(mm)
3.0
4.0
4.8
6.0
Material thickness + 2.0mm
Material thickness + 2.5mm
Material thickness + 3.0mm
Material thickness + 3.5mm
  (A guide only)

Hole Size

Shank diameter
(mm)
Hole Size
(mm)
3.0
4.0
4.8
6.0
3.1
4.1
4.9
6.1

Semi-Tubular Impact Riveting:

open type rivet

Semi-Tubular rivets are inserted in the same basic manner as solid rivets. The way the rivet is formed and its affect on the parts being assembled, however, are quite different.

In semi-tubular impact riveting, a compressive axial load is applied to the end of the tubular rivet shank with a specially shaped form tool. This cause the rivet end to flare as it follows the shape of the tool.

open type rivet

The rivet end continues to flare and roll until the end has rolled back against the surface of the workpiece.

open type rivet

The parts being assembled are (typically) slightly compressed under this load. Most of the joint strength is compressive between the rivet head and rivet clinch (formed end).

Rivet shank expansion, like that required for successful solid impact riveting, is minimal. Rivet insertion force is typically less than 40% of that required for a solid rivet of the same shank diameter & material.