10 Pack M4 Thread Ball Plungers With Hex Socket, 20mm Length, High Carbon Steel Spring Plungers For Lubrication And Pneumatic Tools, 2mm Ball Diameter, 0.7mm Protrusion, Black Finish

Bulk M4 Threaded Ball Plungers with Hex Socket, 20mm Length
✔️ 10 pcs, M4 thread, 20mm length, 2mm ball, 0.7mm protrusion

These are bulk M4-threaded ball plungers with hex sockets designed for precise position locking in fixtures, automation tooling, and pneumatic systems. Used to locate parts, apply steady pressure, and prevent slipping under load.

✅ 10-pack M4 thread ball plungers with hex socket
✅ Length 20mm, ball diameter 2mm, protrusion 0.7mm
✅ High carbon steel body with black finish
✅ 65Mn spring material, preload 3.0-15N
✅ 12.9 grade hex design for precise alignment
✅ Suitable for lubrication fixtures and pneumatic tooling

💡 What is a ball plunger used for in mechanical assemblies?

Ball plungers are handy for quick positioning and locking in fixtures, jigs, and automation lines. - Quick locating and locking in fixtures - Repeatable stop forces for consistent operation - Ideal for indexing and precision alignment in automation