Rivet Setting Dies

There are three styles of rivet dies that are most commonly used in setting rivets.

   Solid  Bottom Die                Receding Spindle Bottom Die         Cap Bottom Die

Solid Bottom Dies:

This type of bottom die is the most commonly used rivet setting die.  It is used where there is no existing hole in the material to be riveted together.  The bottom die can either roll set the rivet which looks like a donut or score set the rivet which flowers out the back of the rivet.  The type of setting that is needed is dependent on the work being done.  In very rigid material a roll set can be used.  In softer material a score set is a better option because it digs back into the material and has a very positive hold.

Receding Spindle Bottom Die

This type of bottom die is used for assembling multiple parts that are already pre-punched. The male point on the bottom die is spring loaded so during the setting process when the rivet goes thru the different layers of material that are stacked on the point and it then comes in contact with the bottom point,  the point recedes into the bottom die allowing the rivet to complete is travel thru the material and set. The receding spindle bottom die also comes in the two setting types, the score setting and the roll setting. The type of setting that is needed is dependent on the work being done.  In very rigid material a roll set can be used.  In softer material a score set is a better option because it digs back into the material and has a very positive hold.  The die can also be made to accommodate a washer if the application calls for one.  A common application for receding spindle bottom dies are 3 ring binder assembly. They are used for basically any project that requires putting multiple pieces together that already have a hole in them.  They work well in metal, plastic and leather.

In addition, for applications that require the use a bottom cap, Siska inc. carries bottom cap dies.

A cap die is used in applications that require the same finished look on booth sides.  The cap and the rivet head look the same and when properly installed with a rivet machine provide a strong hold that has both sides looking the same.  Rivets and caps are almost always used in applications that are not prepunched ( there is no existing hole in the materials)

The top die in a rivet machine is called a driving stem. Its purpose is to push the rivet thru the rivet pockets into and thru the material. Siska Inc. stock driving stems for all Stimpson type rivet machines as well as other rivet machines.