
Ultrasonic Bolting Instruments
Ultrasonic instruments that accurately measure stress, elongation and load in threaded fasteners for controlled, verified bolting.

Dakota also manufactures a line of ultrasonic bolting equipment that very accurately measures the stress, elongation and load in threaded fasteners. By using ultrasound to gauge how much a bolt stretches under tension, these instruments give a direct, verifiable measure of clamping load, which is far more precise than torque alone for critical joints.
This makes them valuable wherever bolted connections must be tensioned to known, repeatable loads for safety and reliability.
- Direct measurement of bolt stress, elongation and load
- More accurate clamping-load control than torque alone
- Ultrasonic, non-destructive technique
- Supports repeatable, documented bolting
- Suited to critical, high-integrity joints
- Critical bolted joints in oil and gas and power generation
- Flange and pressure-equipment assembly
- Heavy machinery and structural fastening
- Maintenance of high-integrity connections
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Submersible Subsea Thickness Gauges
High-spec submersible ultrasonic thickness gauges designed for offshore and subsea inspections at significant water depths.
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Contact our team for genuine Dakotaultrasonic bolting instruments with full technical support and accredited calibration across the UAE.