10 Pcs M3 Thread Ball Plunger Set With Hex Socket 12mm Length High Carbon Steel Spring Plungers For Precision Alignment And Locking In Pneumatic Tools Machinery Metalworking And Lubrication Applications Black

Compact M3 x 12mm Hex Socket Ball Plunger Kit
✔️ 10 pcs set, M3 thread, 12 mm length, high carbon steel

These hex socket ball plungers are compact locking fasteners designed to provide precise positioning and reliable pressure in fixtures, jigs, and automation equipment. They are ideal for mechanical assemblies where small form factor and repeatable alignment matter. The included dimensions ensure easy selection for projects that require compact, high-precision locking elements in tight spaces.

Specification	Metric	Imperial
Total length	12 mm	0.47 in
Thread	M3 x 0.5 mm	M3 x 0.020 in
Ball plunger diameter	1.5 mm	0.06 in
Exposed size	0.5 mm	0.02 in
Spring load	2.0-5.0 N	0.45-1.12 lbf

Applications include providing pressure, fixing parts, and precise positioning in mechanical equipment, fixtures, and automated systems. These plungers excel in environments where repeatable stop positions and secure locking are required, and they pair well with standard holes and recesses for quick, reliable installation.

✅ Thread M3, 0.5 mm pitch; length 12 mm (0.47 in)
✅ Ball plunger diameter 1.5 mm (0.06 in); exposed 0.5 mm (0.02 in)
✅ Material: high carbon steel with blackened heat treatment; corrosion resistant
✅ Spring: 65Mn, preload 2.0-5.0 N; robust 12.9 grade hex design
✅ Pack size: 10 pieces; suited for multiple fixtures or tool setups
✅ Applications: locking and precise positioning in fixtures, automated machines, and tooling

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

It's a handy locking and positioning device that provides controlled pressure for repeatable alignment.

• Precise positioning in fixtures and jigs
• Quick lock-in for automated assemblies
• Easy installation in tight spaces
• Durable performance with high carbon steel and hardened finish