These are the knobs we use for the hold down clamps on CNC machines. They work great to hold your part in place while it's being cut. They make for a quick, easy adjustment for part swap outs or position changes and require little to no maintenance.
Works great with the Flat Washer 1/4" Screw Size
1/4"-20 x 1-1/2" Threaded Steel stud 1-18" Diameter
Qty. 1 piece
Note: You can mill out simple hold down clamps once your machine is up and running.