Technical Drawing - Threads, Fasteners and Springs

Exercise : Threads, Fasteners and Springs - General Questions
6.
This is the smallest diameter of a screw thread:
Internal thread diameter
Minor diameter
Major diameter
External thread diameter
Answer: Option
Explanation:
No answer description is available. Let's discuss.

7.
This is the bottom surface joining the sides of two adjacent threads:
Lead
Pitch
Crest
Root
Answer: Option
Explanation:
No answer description is available. Let's discuss.