Each 1/4-20 knob has a brass insert that molded in a plastic knob. The thru knobs have enough threads that are intended to thread on a bolt to clamp them together
The star knobs work great as a holding jig, holds steady and requires little effort to loosen and tighten back up
Clamping Handle Screw Knobs Handle Star Knob M6 Thread,Female Thread Size: T track knob threading is 1/4 inch in diameter , suitable for 1/4-20 rod
The bolt can go all the way through the tightening knob, and stick out the top to give plenty of adjustment range, which is handy when the screw happens to be longer than you need it to be
The screw-on clamping knobs fit for routing jig, saw fence, drill press, lathe, fixture which requires a 1/4-Inch 20 female thread
Description
1/4-20 knob,Star knob knob M6x 30mm / 1.18 inches
Colour: Black
Material: plastic, brass
Female Thread Size
T track knob threading is 1/4 inch in diameter , suitable for 1/4-20 rod
Type: Screw-in Color: gold ,black Head diameter: 30mm / 1.18 inches
Thread Diameter: 6mm / 0.24 inch
Packing:20pcs 1/4-20 Female Threaded Hexagon Head Thru Knob