1/4 inch per foot
1/2 inch per foot
5/8 inch per foot
3/4 inch per foot
lead screw has metric thread and the thread to be cut also metric thread
lead screw has English thread and the thread to be cut metric thread
lead screw has English thread and the thread to be cut also English thread
None of the above
it helps in forming of chips
it decreases the vibration and noise
it increases tool life and surface finish
it prevents forming of built up edge
Have maximum negative allowance and sufficient amount of force required for the assembly
Lies somewhat between clearance and interference fit
It is used in the assembly where the parts are not to be disassembled for life
Used for high speed of rotation
0.6
0.7
0.8
0.9