Knob with Threaded Stud

These hand knobs with 3/8-16 stud are used in the assembly of several different machines. The Three Arm Knob is used in the assembly of the Probe and Probe Plus (Plow and Extreme Plow), and Spank-O-Matic SOM II stand. It’s also the pivot point for the swinging arm on the Mini Stallion, Stallion, and Stallion XL. The Four Arm Knob is used on the Black Magic, with a special shortened version required between the two legs.