DTIs Applied Bolt will make custom torque (tension) indicating washers.
Not sure if the these bolts are into a plate with threaded holes, or there are nuts being used...
To install cable clamps on suspension bridge cable (that locate the suspenders) we used a gang set of center pull hydraulic jacks connected to a manifold. First you have to draw the halves of the clamps together, then compact the main cable, then tension the bolts..pump up the jacks, then, snug up the hex nuts, pump up the jacks to design tension, snug the hex nut, relieve pressure... now repeat on the 299 other cable clamps..
The equipment we used on the Williamsburg Br was made by Biach Industries..
Biach
They were aquired by
Hydratight
If you can only access one side of the fastener you can use a set of of Biachs hydraulic torque wrenchs... Hydraulic pressure would be easier to more accurately control than air and an impact type wrench...
