Universal Ball Knob Set For Quick Hand Adjustments Fits Five Sixteenth Inch And Three Eighth Inch And Metric M8 M10 Screws Black 3 Pack No Tools Required For Easy Installation High Strength Plastic For Maintenance Cabinets Drawers And Doors

Three-piece universal ball knob set fits 5/16-M10 threads
✔️ 3 self-threading knobs; fits M6-M10 and 1/4-3/8 in diameter.

These self-threading ball knobs offer a fast, tool-free hand adjustment solution for machines, fixtures, and control panels, perfect for workshops, manufacturing lines, and maintenance work.

✅ Self-threading design; no tools required for installation
✅ High-impact polypropylene body; rust-free and vibration resistant
✅ Fits metric M6-M10 and standard screws 1/4-3/8 in
✅ Diameter range 1-3/8 in to 2-1/4 in (35-57 mm)

💡 What is a ball knob used for in manual equipment?

Handy overview of common uses in everyday setups.

• Used for fast, comfortable hand adjustments on clamps, fixtures, and control arms.
• Gives a secure grip and saves time by avoiding tools during setup.
• Supports a range of screw sizes (M6-M10 and 1/4-3/8 in) for flexible application.