Torque Values for Brass Fasteners
Torque Values for Brass Fasteners
(OP)
Does anyone have a torque value table for brass fasteners? I am specifically looking for 5-16"-18 brass to mount a ground lug to the stud. I would like the preload and finish torque values.





RE: Torque Values for Brass Fasteners
Phil
RE: Torque Values for Brass Fasteners
RE: Torque Values for Brass Fasteners
The nut factor will vary from 0.10 - 0.4 depending upon many variables. With new fasteners, anti-seize thread lube, and hardened flat washers (or smooth flange) the nut factor will be ~0.18.
RE: Torque Values for Brass Fasteners
RE: Torque Values for Brass Fasteners
Here is a very simple method of determining the optimum torque. First, get a torque wrench, and install the brass bolts into a suitable temporary joint. Add the nut and torque slowly, adding force increments until the bolt thread is sheared, or the threads shear.
Now you know the torque required to achieve the ultimate shear strength of this specific bolt. For a safe working-margin, just use 60% to 70% of this value, when torquing your bolts in your actual application.
This method can be used with any bolt material. However, you still have to confirm that the bolts can handle the loading applied in service.
Good luck,
abdul