The Orbital Fastening Experts


Conical?  Flat?  Flaring?  Crown?
The team at eci SpinnOmatic™ can help design custom or match your desired rivet shape to your applicatios. Purchase the whole assembly or just the worn/broken parts.


SpinnOmatic Demo

Peen Quick Reference

Diameter      eci SpinnOmatic™ Order #     
5/16" Diameter Peen - Flat A-2057
5/16" Diameter Peen - Conical       A-3744
1/2" Diameter Peen - Flat A-2812
1/2" Diameter Peen - Conical A-3745
3/4" Diameter Peen - Flat A-3076
3/4" Diameter Peen - Conical A-5246

SpinnOmatic Forming Heads
By changing the design of the forming tool (the peen), it is possible to change the shape of the finished head of the rivet.  The table above shows some of the typical headforms, but our experienced staff in our development lab can design custom peens for any type of application.

Testing?  Questions?
Send us your part print or come vist our lab to find the right peen for your next project.

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Bearings & Seals

Precision bearings and seals are essential for the logevity and strength required to form and keep machinery running.

Forming Heads

The forming head is the rotating tool holder. A forming head holds the peen by either set screw or magnet. The sized of the head is determined by the desired diameter of the finished rivet.

Need special items in stock?

We will keep inventory here at eci SpinnOmatic™ for you.  Call (586) 752-9100 to setup your special needs.


  • Full Design In-house Machine Support
  • Leasing/Certified Refurbished Machines
  • Production/Prototype Parts
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  • Tooling Design and Development
  • Prototype Sample Development
  • Fixture Design and Development
  • Process Development

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