They break easily. Though the standard is 74,000 psi minimum tensile strength these are the bolt grades to avoid. They range in size from 1/4- to 1 1/2-inch in size.

Larger frame size step motors create more torque than smaller-sized motors. Although they increase torque, these larger motors don’t always fit in an application’s limited space. However, if ...

Tightening the fastener is like pushing "uphill;" loosening it is like pulling "downhill." In AvE's test, it takes around 10 percent less torque to loosen a bolt than what was put into tightening it.