Back to glossary
Coefficient of Friction
Coefficient of Friction is a core engineering term. Definition, usage notes, and a practical example.
Definition
Coefficient of friction is the ratio describing resistance to sliding between two surfaces.
Why it matters
It strongly affects bolt torque, braking, wedge, and slide design.
How it is used
In a design check, first define the relevant load, dimension, material, or flow condition. Then interpret this term by its role in the formula and compare it with limits.
Example
A change in lubrication can make the same bolt torque produce a different preload.
Related calculators and resources
Formulas
No formulas added for this term.