IronClad Super Duty Bolt Cap

IronClad Super Duty Foundation Anchor Bolt Cap

We are proud to introduce an all new foundation anchor bolt cap designed to combine all of the best features of the IronClad Standard Duty bolt cap and the IronClad Extreme Duty bolt cap and more.


  • Integrated O-ring – No need to install the o-ring during cap installation.
  • Vented – Integrated water proof vent to prevent vacuum water draw.
  • Polypropylene Copolymer Construction – Built for the same strength and durability as our Extreme Duty bolt cap.
  • Universal Fit – Fits rod projections from 10 to 16 inches and rod sizes from #10 grade 75 to #11 – 150 KSI.
  • Quick Shipment – Our caps are made right here in the USA from domestically sourced materials. Due to the universal fit and advanced manufacturing, we are able to stock large quantities and ship on your schedule.
  • Easy Installation – Can be installed with no tools, removed and reinstalled without damage to the cap or foundation components.

NTC Wind Energy has been your bolt cap supplier for over 20 years and we have listened to the needs of our customers throughout the wind industry. The IronClad Super Duty foundation anchor bolt cap answers those needs and we are confident that you will agree. Please give us a call today at 1-800-359-0372 or just select “Get a Quote” on this site and we will be honored to help you with your product needs.

Super Duty IronClad Foundation Anchor Bolt Cap Specifications

The crews at site appreciated not dealing with separate o-rings that are dislodged, broken, or missing from the caps. The IronClad Super Duty bolt caps fit perfectly. I was at a large wind site in Eastern Canada and was surprised how much water was retained by a competitor’s bolt caps.
David H. – Enbridge