Question

Calculations of required fastener tightening torque depends on two variables. What are these variables?

1) Thread pitch and bolt diameter
2) Thread pitch and bolt length
3) Bolt diameter and bolt length
4) Bolt material and bolt length

Answer 1

Calculating torque for tightening fasteners involves the force applied, the direction of that force, and the distance from the pivot point, not only dimensions such as thread pitch or bolt size.

Step-by-step explanation:

Calculating the required fastener tightening torque does not solely depend on the thread pitch and bolt dimensions such as diameter or length. Instead, torque takes into account the force magnitude, the direction of the force, and the point of application of the force relative to the pivot point. For example, when tightening a bolt using a wrench, the torque applied to the bolt is the product of the force exerted on the wrench and the distance from the bolt to the point where the force is applied, measured perpendicularly.

In calculations related to mechanics and rotational motion, torque is essential because it causes objects to rotate around an axis. The moment of inertia plays a significant role alongside torque as it depends on the mass of the object and its distribution relative to the axis of rotation.