Head stock
Tail stock
Bed
Carriage
ACME threads
Buttress threads
Whitworth threads
V- Threads
Acme threads are used in lathe lead screws. This form of thread enables the easy engagement of the half nut. The metric acme thread has an included angle of 30°.
D1/D2
D2/D1
D1-D2
D1
Short columns
Long columns
Both short and long columns
Weak columns
(5/8)
(8/5)
(5/4)
(4/5)