Andrews Fasteners Ltd

• The use of DTIs is the simplest way of ensuring that bolting assemblies are tensioned properly;
• The use of DTIs saves cost on inspection.;
• No torque figures are required, only feeler gauges;
• Risk reduction on over tightening;
• DTIs are manufactured in compliance with EN 14399-9 and can be supplied with CE approved preload bolting assemblies;
• Unique curved protrusion design of Turnasure DTIs reduce necessary of using nut face / bolt face washers for 8.8 grade assemblies;
• Direct Tension Indicators (DTI) retain their accuracy regardless of their surface condition during tightening, be they oiled, coated or even rusted.
• DTIs can be fully flattened before the bolt yields thanks to their unique geometry, so a flattened DTI can be seen at a distance without the need for a feeler gauge.
• DTIs provide assurance of slip resistance.

Product Range