M3 304 Stainless Steel Spring Hex Socket Ball Point Grub Plunger Screw Set 20Pcs(M3*8MM)

Positioning ball is also called ball head plunger or spring plunger. A load device (SLDs) consisting of a shell, spring, ball or cylinder Engineers often use it in mold, fixture, assembly and other work This M3 thread hex spring ball plunger screw set are made of stainless steel material, which can provides strength and offers good corrosion resistance in many circumstances With the help of a certain pressure of the spring to promote the movement of the ball, so that the smooth of the equipment Widely used in some medical equipment, lubrication equipment, pneumatic tools and other products