A DTI washer whose protrusions are backed by pockets of bright silicone. As the bumps flatten at the required tension, the silicone is forced out through channels, so the installer sees completion without reaching for a feeler gauge. The name started as a trade name and is used for the type on steel erection jobs.
Heard on the job
Keep turning till the orange comes out of the squirters on all of them, then move on to the next splice.
Also heard as
- squirter DTI
Related terms
DTI
Direct tension indicator: a hardened washer with bumps that flatten when the bolt reaches required tension.
A325
The workhorse high-strength structural bolt: heavy hex, quenched and tempered, 120 ksi minimum tensile.
Snug tight
The first stage of bolting, where the joint plies are pulled into firm contact before final tightening.