Question

The nominal diameter of a screw thread is also known as

(a) root diameter

(b) minor diameter

(c) outside diameter

(d) none of the mentioned

The question was posed to me in class test.

Enquiry is from Friction of a Body Lying on a Rough Inclined Plane in chapter Friction of Machine Kinematics

Answer 1

Right option is (c) outside diameter

For explanation: The core diameter of a screw thread is also known as inner diameter or root diameter or minor diameter.

The nominal diameter of a screw thread is also known as outside diameter or major diameter.