Rivet with Mandrel

A more common name for this type of rivet is blind rivet. It consists of a hollow cylinder with a rim, either round or countersunk, into which a metal mandrel is inserted. The product visually resembles a sword or a paper-piercing needle.

The name “blind” (pull-through) reflects the installation process: after setting, the metal mandrel is removed from the structure.

Product features

Mandrel (blind) rivets are used for joining materials of small thickness, usually no more than 17 mm, such as metal sheets. The rivets provide a joint even when access is available from only one side of the structure.

Materials for the rivet and mandrel are aluminium, copper, stainless steel. Products are zinc-coated to extend service life.

The most common sizes: length 6–45 mm, diameter 2–6 mm. The mandrel length is typically standard — 27 mm.

Application and installation rules

Installation is done with a pneumatic riveting tool. First, a hole is drilled in the elements to be joined. The rivet is then inserted head outward, mandrel first. The pneumatic tool applies load to the mandrel, which flattens the hidden end of the rivet, then breaks off and is removed.