Question

a(n) ____________ is a friction fit item that firmly hold one part to another, such as a gear to a shaft. select one: a. roll pin b. cotter pin c. \e\ clip d. snap ring

Explanation:

A roll - pin is a friction - fit cylindrical fastener used to hold parts together like a gear to a shaft. A cotter pin is used to prevent axial movement. An "e" clip and snap ring are mainly used for axial location and retention, not primarily as friction - fit items for holding parts in the way described.

Answer:

a. Roll pin