Use the torque wrench on a long 6 mm hex socket like this, passed through the hole of the pass through socket while the 17mm pass through and its wrench holds the nut. (or you can hold the torque wrench and turn the 17mm - the torque wrench will still click at or deflect to the right torque just the same). The hex socket probably doesn't need to be nearly as long as this one to work with a pass through socket, nor does it need to be the ball-end type as shown. One like this would be fine:
If I'm understanding this correctly I can get an 6mm hex drive (1/2") onto the torque wrench and hold still the 17mm nut, the torque wrench should still click when 30 ft-lbs is reached.
Yes. You can either hold still the 17mm nut still and turn the 6mm with torque wrench attached or hold the 6mm with torque wrench still and turn the 17mm nut. Either way, the torque wrench will sense how much torque is being applied to the connection, as long as you're holding the torque wrench properly. You don't have to even find a 1/2 drive 6mm hex to attach directly to the torque wrench (I'm assuming you have a 1/2" drive torque wrench from your post. You can use a 3/8 - 1/2 adapter (but not a universal or wobble one) as long as you're holding the torque wrench correctly (not on an angle or with side-load applied).
I talked with Jake at Ohlins in NC and he said to use my go-thru ratchet/sockets to tighten the strut nuts and to check the torque as I turn the nut every quarter turn. He advised against using an hex drive because the shaft is to thin around the hex insert. I purchased the 22mm strut nut socket from ECS Tuning and their shipping it Next Day Air and should have it tomorrow. :biggrin5: