Direct Tension Indicating Washers, DTI Washers, Squirter Washers, are single use mechanical load cells used to indicate when the required tension has been achieved in structural fastener assemblies. The DTI washer is installed under another washer, either under the head of the bolt or the nut. When the specified tightening torque has been reached, the DTI washer compresses and some colored material squeezes out from under the washer to provide a visal check.
DTI Washers Diameters
DTI Washers are available on the FCH Network with Imperial/US diameters that range from #1 to 1 3/4 and with Metric diameters that range from M16 to M30. The length of DTI Washers is usually measured from the point to the underside of the head.
DTI Washers Finishes
DTI Washers are available on the FCH Network in finishes or coatings that range from Plain to Aluminum zinc flake (Dacromet, Magnigard, Doerken)