Uxcell 5pcs Screw Thread Ball Plunger M4 x 10mm High Carbon Steel Hex Socket Spring Plunger Ball for Lubrication Pneumatic Tools, Black

1. Our ball head plunger and housing are made of high-strength high-carbon steel, with blackened heat treatment on the surface, smooth inside and outside without burrs, corrosion-resistant, rust-resistant and wear-resistant, sturdy and durable.
2. 12.9 grade high-strength hexagonal design, precise size, neat and clear threads, uniform force, and installation is not easy to slip. High-precision spring mechanism design, using 65Mn material, strong spring load force, can be fine-tuned without loosening the screw, reducing surface wear.
3. This spring plunger is an important workpiece for providing pressure, fixing and precise positioning, and is widely used in mechanical equipment, fixtures, automated machines, etc.
4. The ball head plunger is small in size, flexible and convenient to install, and has a good locking effect. It is very suitable for projects that require high efficiency.
5. Note: Please allow a slight tolerance due to manual measurement.