These compact 250K concentric pots allow you to get the maximum amount of adjustability in a confined control cavity. Includes mounting nuts and washers.

Important Specs and Dimensions:

Overall length of pot without knobs = 1 1/2 inches (38.04mm)
Length of threaded collar = 3/8 inch (9.6mm)
Diameter of threaded collar = 11/32 in. 
Length of housing = 9/16 inch (14.17mm)
Height of lower knob = 25/64 inch (10mm)
Diameter of lower knob = 3/4 in. 
Height of upper knob = 13/32 inch (10mm)
Diameter of lower knob = 9/16 in. 
Inset of lower knob = 3/32 inch (2.5mm)
Inner shaft Diameter = 1/8 in.
Outer Shaft Diameter = 1/4 in.
Thread type = M8 0.75 threads