Uxcell 4 Set Male Thread Head Knurled Clamping Knobs Thumb Screws with Nuts Washers Black M8 x 40mmx 25mm Zinc Plated Carbon Steel

Zinc plated carbon steel threaded studs on knurled knobs ensure durability, strength, functionality and wear resistance. The washers and nuts are made of iron, with high hardness, zinc plated surface, which greatly enhances the anti-corrosion and anti-rust capabilities. The tightly-in metal threaded stud can securely join components together, easy to install, suitable for various applications. The knurled texture on the surface provides better grip, making it easier to tighten or loosen the knob. The threads are neat and clear, the force is even and deep, not easy to slip, and there are no burrs. Safe and secure knurled thumb screws for the ultimate in adjusting and tightening control. Durable plastic clamping knobs provide a smooth and beautiful surface as well as a comfortable grip. Knurled knobs with hand bolts are commonly used in applications that require frequent adjustments or tightening. Widely used in lathes, drill presses, sawing machines and packaging.