Hydra-Dynamics, Inc.

The Woodlands, TX  |  936-273-2882

Direct Tension Indicating Fasteners - 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. No wires, instruments, complex procedures or electronic black boxes. The only instrument needed is the eye. The indication is based on fastener elongation under load.

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