Durable Black Star Knobs With 1/4-20 Thread, Knurled Thumb Nuts For Mechanical Instruments And Umbrella Base Replacements, Female Hex Head Through Knob, Carbon Steel Star Grip For Smooth No Slip Handling
✔️ 1/4-20 thread, 25mm head, 20mm screw, 10 pcs per pack
These star-style knurled thumb nuts are compact clamping knobs designed for precision tightening in tight spaces, ideal for mechanical instruments, umbrella bases, workshop fixtures, and jig setups.
✅ 1/4-20 male thread with 25mm head diameter (0.98"), 20mm screw length
✅ Material: carbon steel star grip with galvanized finish for strength
✅ Plastic head screws for durable clamping and smooth operation
✅ Pack: 10 pieces per set
✅ Ergonomic knurled hex-through knob design for precise control
✅ Applications: fixtures, umbrella bases, jigs, drawing boards
💡 What is a knurled star knob used for? A handy, general purpose fastener for equipment in various setups. - 1/4-20 threaded knobs fit many fixtures - Star grip gives a non-slip, comfy tightening feel - Ideal for tool jigs, umbrella bases, and instrument mounts