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  Design Guidelines
 

HOW THEY WORK!
A Blind Rivet consists of two parts: the rivet body and, within it, the setting mandrel.

1. The Blind Rivet body is inserted in a hole in the materials to be joined.

2. The Blind Rivet tool is placed over the mandrel. The tool is actuated and the jaws of the tool grip the mandrel.

3. The jaws retract, extracting the mandrel which pulls the mandrel head into the rivet body setting the rivet. At a predetermined tensile load, the mandrel breaks from its head and is discarded.
This forms a strong, tight, reliable joint. Because this is all done from one side these are called BLIND rivets.

  Design Guidelines  

Channel Material
(A) If the nose housing of the tool is too large in diameter to reach the bottom of a channel, use a long nosepiece on the tool. A rivet with an extra long mandrel may be required.
(B) Install the rivet from the opposite side.
Design Guidelines
(A)
(B)
LONG NOSEPIECE
NOSE HOUSING


Gap Fastening
(A) Avoid riveting unsupported internal sections which may result in collapsing, dimpling or buckling the material.
(B) Select supported sections for best success.



Design Guidelines
(B) Good
(A) Bad


Pivot Fastening
When the fastened part must rotate on the rivet, a "pivot style" nosepiece on the rivet tool may be necessary to provide a small gap under the rivet head.
Design Guidelines
GAP UNDER
RIVET HEAD
PIVOT NOSEPIECE


Fastening in a Blind Hole
Blind rivets may be set in a blind hole or milled slot. The success of this depends on the material of the parts to be riveted and the material of the rivet. Testing will be required.
Design Guidelines


Riveting Plastic Material
Select: (A) "Soft Set" aluminum rivets, (B) Large Flange style rivets or (C) "Tri-Grip" rivets.
Design Guidelines
(B) Large Flange
(A) Soft Set
(C) Tri-Grip


Hard to Soft Materials
The following illustration is a guide for using standard blind rivets to fasten hard materials to soft materials. Other options are to use Groove Rivets or T-Lok Rivets.
Design Guidelines
Good
Bad
WASHER
Good
Fair
Fair
SOFT
MATERIAL
HARD
MATERIAL


Edge Distance
We recommend 2 times the rivet body diameter (D) or more from the center of the rivet to the edge of the work piece to avoid material fracture.
Design Guidelines
Dx2
D
Dx2


W13 2008
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