10 Pcs M12 X 40mm Screw Thread Ball Plunger High Carbon Steel Hex Socket Spring Plunger For Lubrication And Pneumatic Tools 6mm Ball Diameter 30 To 80N Load For Durable Performance Premium

10pc M12x40mm Ball Plunger Set with Hex Socket
✔️ M12x40mm thread, 6mm ball, 40mm length, 30-80N spring

These compact screw-thread ball plungers with hex socket heads are forged from high-carbon steel and finished with a blackened coating for durability and corrosion resistance. They’re designed for precise locking and positioning in fixtures, automated machines, and pneumatic tool setups.

✅ Thread: M12x40mm (0.47" x 1.57")
✅ Ball diameter: 6mm (0.24")
✅ Total length: 40mm (1.57")
✅ Spring preload: 30-80N
✅ Material: high-carbon steel, blackened finish
✅ Hex socket head, 12.9 grade design
✅ Pack size: 10-piece pack

💡 What is a screw thread ball plunger used for in precision fixtures and automated tooling? This handy piece provides reliable locking and precise positioning in compact spaces.
- Provides repeatable stops in fixtures and jigs
- Works with M12 threaded holes and hex socket heads
- Made from high-carbon steel with a blackened finish
- Reduces wear by controlled spring preload