Impacts should only be used to break truss apart. You never really know the exact torque you are getting on an impact. Also, you run the risk of crossthreading the bolt. Impacts to that rather easily. If you have ever dealt with a stuck truss bolt, you know you should avoid that at all costs.
I prefer this tool for all my truss bolting needs....
Klein 8238
Just for clarification--I think that is a Klein 3238 construction model....or is there a new 8200 series I have not seen in my catalogs yet?
-w
Wildly varying responses from TRUSS and Bolt Torque Specs - Cinematography.com :Since no one answered...What's the correct torque for truss bolts? ...
A post on BlueRoom (that I have not confirmed), states:
good point made about the actual bolt size.. referencing the mechanical trades pocket manual; 3rd edition
3/4"grade 8 bolts require 296 foot pounds torque
5/8"grade 8 bolts require 180 foot pounds torque
Note: these differ from the values listed in the PDF Link [ http://www.teleamerica.net/reference/Mechanical/Grade_8_bolt_torque.pdf ] mentioned above.
Spoke with a represenative of Tomcat Global USA today. They called me back after checking with (I assume) the shop staff and told me 80 ft/lbs of torque.
While most have a 15/16" hex head, bolts are specified by diameter, TPI, and length, not the head size/type.... and truss bolts are usually 15/16".
Ratchet. The base is part of the lamp. Wait, wrong pedanticiasm.... and stand on the end of a 12" socket to achieve 200 ft-lbs.
I do carry around a 18" breaker bar
stand on the end of a 12" ratchet to achieve 200 ft-lbs.
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Ratchet. The base is part of the lamp. Wait, wrong pedanticiasm.
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