When it’s critical… 


                      it’s Cardinal


We’re Hiring at our Winona, MN LOCATION.

What you need, when you need it.

Cardinal Fastener Inc. is one of the largest fastener manufacturers of large diameter, hot forged bolts in America. ​Cardinal prides itself on having the shortest lead times (as fast as same-day) of any manufacturer in the world.

Our unsurpassed quality is matched by the lowest manufacturing cost of any hot forger in North America. That’s how we became one of the first fastener manufacturers in the world to receive (ISO 9001:2015) certification.




Hot Forging Capabilities

We can manufacture a variety of head styles and diameters up to 4-1/2″ or M72, which can be seen on our innovative birdie chart, available here.

Large Variety​
We can forge a large variety of materials including carbon steels, alloys, high nickel alloys and stainless steels.
Certifications: ISO 17025 API20E BSL 1, 2, 3

  • Hex Head Bolts
  • Hex Cap Screws
  • Heavy Hex Bolts
  • Heavy Hex Cap Screws
  • Hex Flange Bolts
  • Square Head Bolts
  • 12 Point/Ferry Cap Screws
  • 12 Point Nuts
  • Hex Nuts
  • Socket Head Cap Screws
  • Flat Head Cap Screws
  • ​Carriage Bolts
  • Sex Bolt
  • Body Bolts
  • Penta Head
  • Oval Head Track Bolts
  • Pipe Plugs
  • Heavy Hex Nuts
  • Square Head Set Screws
  • Plow Bolts
  • Liner Bolts
  • Custom Head Designs
  • Button Head Cap Screws ​