The lead screw of a lathe has _________ threads.
A
Single start
B
Double start
C
Multi-start
D
Any one of these
Correct Answer: Single start
A single-start thread has one continuous thread running along the body of the screwA trapezoidal thread is used in the leadscrew of lathe machine. It has a 30 degree included angle. Stronger at the root. Easy to manufacture compared to square thread.