
WHO WE ARE
SmartBolts® are tension-indicating fasteners designed to enhance safety, reliability, and efficiency in bolted joints. Our patented Visual Indication System™ provides real-time tension feedback, supporting preventive maintenance and reducing costly failures.
Manufactured by Industrial Indicators, an ISO 9001:2015 certified company, SmartBolts are trusted across a wide range of industries to prevent downtime, extend equipment life, and keep your most important asset (your people) — SAFE.
FOR OVER 30 YEARS, SMARTBOLTS HAVE BEEN HOLDING IT TOGETHER — STRONGER, SMARTER, AND PROVEN TO PERFORM.

SmartBolts is Recognized among Frederick's Top 50 Manufacturers
Industrial Indicators is proud to be honored for manufacturing SmartBolts — tension-indicating fasteners engineered for global industries.

OUR HISTORY
Industrial Indicators, Inc. was founded by aerospace engineer and award-winning inventor, Charles H. “Chuck” Popenoe. A thought leader in applied physics and a world-renowned innovator, Chuck was granted 35 U.S. and international patents, including one in 1966 for the original design of the first Direct Tension Indicator (DTI) bolt fastener.
He used this concept to develop SmartBolts, the first bolt to display actual fastener tension visually on a red-to-black scale. Since the commercial success of SmartBolts in General Electric’s electrical distribution product line, hundreds of the world’s leading companies have adapted the product for use in their installations around the world, including the National Weather Service, NASA, FLSmidth, and GE Healthcare.
QUALITY ASSURANCE
We pride ourselves on being a trusted and longstanding partner throughout your entire SmartBolts experience. SmartBolts significantly improves the safety of our customers’ applications while providing an accessible solution that offers a wide range of unique benefits.
MEET OUR TEAM
