SmartBolt DTI
Know at a Glance it’s Tight

SmartBolt DTI are tension indicating fasteners that offer real-time visual indication of bolt preload. A visual indicator simplifies the installation and inspection process.

When you know at a glance that a bolted joint requires maintenance, issues can be identified and fixed before they become problems.

 

Browse the Catalog Custom Configuration


Safety

Limit risk in hazardous areas and prevent accidents. Identify and fix issues before they become problems.

Efficiency

Quickly verify clamp load without touching tools, pausing production, or powering down equipment.

Reliability

Clear and repeatable preload reading that meets the toughest standards.


DTI Visual Indicator

The DTI Visual Indicator is a color-calibrated real-time display of tensile load. The indicator is bright red when the fastener is loose and gradually transitions to black when the fastener is tightened to its desired tensile load, or Design Tension.


Loose
25%
50%
75%
Tight

Visual Indication

Quick visual inspections from a distance.

Real-Time Feedback

Tensile load is measured and displayed without delay.

High Visibility

Vivid color display ensures maximum clarity.

Unlimited Cycles

Completely reusable with continuous functionality.

Customizable

Meet application-specific preload requirements.

Compatitable

Fully compatible with all standard tools.

We recommend the use of a DTI Verification Guide to inspect a SmartBolt DTI Visual Indicator. DTI Verification Guides are supplied with every order of SmartBolt DTI. Contact us to request additional supply.


Watch a Demonstration

Watch the DTI Visual Indicator respond in real-time to the changes in tension by changing color: red when loose and black when tight. We recommend watching in full-screen mode for best results.

In this demonstration a bolt tension calibrator stretches a SmartBolt DTI from 0% to 100% Design Tension, then returns the SmartBolt DTI to 0% Design Tension. The demonstration features a SmartBolt DTI with a design tension of 40.6 klbf (40,600 pounds-force).

In this demonstration a hydraulic torque wrench tightens a SmartBolt DTI from 0% to 100% Design Tension, then the tool loosens the SmartBolt DTI to 0% Design Tension. The demonstration features a SmartBolt DTI with a design tension of 100 klbf (100,000 pounds-force).


Find Your SmartBolt DTI

SmartBolt DTI are available in a wide range of fastener types and sizes. Available options start with minimum diameter of 7/16″ (M10) and a maximum diameter of 2.5″ (M64). You can review the SmartBolt DTI Tech Specs for more detailed product information.

Pre-Engineered products are appropriate for a wide variety of applications and often available directly from inventory. Available options are listed in the SmartBolts Product Catalog.

Custom products are specific product configurations from our full range of options. You may specify your requirements for Custom SmartBolt DTI by using the Product Request Form.

Hex

Minimum Diameter 7/16″ (M10)
Maximum Diameter 2.5″ (M64)
Product Category Options Pre-Engineered, Custom

Browse the Catalog Request a Custom Configuration

Heavy Hex

Minimum Diameter 1/2″ (M12)
Maximum Diameter 2.5″ (M64)
Product Category Options Custom

Request a Custom Configuration

Hex Flange

Minimum Diameter 1/2″ (M12)
Maximum Diameter 2.5″ (M64)
Product Category Options Custom

Request a Custom Configuration

12-Point Flange

Minimum Diameter 5/8″ (M16)
Maximum Diameter 2.5″ (M64)
Product Category Options Custom

Request a Custom Configuration

Socket

Minimum Diameter 1″ (M24)
Maximum Diameter 2.5″ (M64)
Product Category Options Custom

Request a Custom Configuration

Special Custom

Request a special custom product configuration from our full range of options.

Request a Custom Configuration