You used fine thread, 7//16-14 is course. Looks like 70 Ft Lbs to me. Some say dry at 80 and lubed at 60. Fine and course are different values. Charts are all over the place. Some charts go over 100 lbs. Also even though I recommended lock washers they don't provide much at that size bolt. They will not really prevent loosening. But don't worry, your bolts won't loosen because of the torque/friction/stretch. Known as preload. 70-75 is tight enough IMO. Deformed thread lock nuts instead of regular nuts would be extra safety if you wish. Those would be used with just a flat washer. Lock washers are mostly for smaller/delicate screws/bolts. But we can't resist using them. I can't. Some studies say it's spring rate is 70% more effective than a flat washer. But it actually is a flat washer after compressed. NASA says it is their least favorite locking method and is useless.
This is a supposed quote from ASME B18.21.1,
I don't have a copy yet so unverified:
"The word lock appearing in the names of products in this standard is a generic term historically associated with their identification and is not intended to imply an indefinite permanency of fixity in attachments where the fasteners are used."
These guys love to make up words like fixity. Awesome.
Bottom line depends on what it is. High performance rod bolts have their stretch measured, your bracket can be off torque 10-15% and still be safe.
