Question

in hvacr work, which statement is true regarding set screws?
o they are most often used with a nut and lockwasher
o they are most often used to secure a fan blade or blower wheel in place
o they are made with extra - coarse threads
o they are made from stainless steel

Explanation:

In HVACR (Heating, Ventilation, Air - Conditioning, and Refrigeration) work, set screws are commonly used to secure rotating components like fan blades or blower wheels to shafts. They are not typically used with a nut and lockwasher, do not necessarily have extra - coarse threads, and are not always made from stainless steel.

Answer:

They are most often used to secure a fan blade or blower wheel in place