roll tap lubricant
 

What lubricant should I used to roll tap extruded aluminum in the 4-40
to 1/4-20 range?

Thanks in advance.

Chuck P.

roll tap lubricant
 

Pilgrim wrote:
What lubricant should I used to roll tap extruded aluminum in the 4-40
to 1/4-20 range?

Thanks in advance.

Chuck P.
I just use plain old oil for #8 and #10 but think an EP would be
easier on the torque.
...lew...