Stress Indicators Inc.

Click HERE To order SmartBolts directly from McMaster Carr. Scroll to the bottom of the page to find the listing under "Tension Indicating High-strength Steel	Direct Tension Indicating Fasteners
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		Simple No wires, instruments, complex procedures or electronic black boxes. The only instrument needed is the eye. The indication is based on the most accurate known principle for fastener tension measurement - actual fastener elongation under load.
		Visual Tension Indication SmartBolts® is the only tension indicating fastener system featuring an eye-catching visual indication of a potentially dangerous condition, obvious even from a distance and in moving machinery. (Use mouse to operate the SmartBolt)	Download Our Brochure Technical Information Client List Order Samples Contact Us
			SmartBolts® is a registered trademark of Stress Indicators, Inc.