20 Pcs M6 x 40 mm Star Screws, Plastic Head Clamping Knob, Clamping Screws with Handle, Black Knurled Threaded Knob, Galvanized Wing Screws, for Mechanical Machine Lathes

Star screw size: With a 25mm head diameter and an M6 x 40 size, the M6 star nut is a set of screw clamps that can be used on your existing saw stop, drill press, lathe, milling machine, stencil, spring plate, or any other application. Threaded design: The star handle screws have a star-shaped, threaded design, and the surface is carefully polished to ensure a comfortable grip. The star-shaped knobs are ideal for manual adjustments in mechanical engineering. Plastic and carbon steel: The star screw kit is made of plastic and carbon steel. The nut surface is galvanized, which is not only wear-resistant, corrosion-resistant, and heat-resistant, but it also resists rust and has a long service life. Easy to tighten by hand: The star-shaped screw and nut can be easily tightened by hand; no other tools are needed. The M6 tightening knob with internal thread facilitates adjustment and tightening with maximum control and movement, without the need for additional tools. Machine tool clamping screw: the plastic is comfortable to hold and withstands torque well without detaching from the metal. The plastic handle of the wing screw provides a comfortable grip and is suitable for most machines and devices, such as mechanical equipment, instruments, food and industrial equipment, and household appliances.