Sleeve aluminium.
Spring steel.
Thrust pin steel or POM.

Steel thrust pin hardened and electro zinc-plated.
Sleeve blue electro zinc-plated.

Lateral spring plungers are for positioning, clamping, holding and fastening of workpieces during engraving, labelling, drilling, reaming, tapping, honing, grinding, welding, soldering, tooling, assembling, etc.
Eccentric adjustment bushes are also avaialable.

Dimensions W and Z are customer specific.

1) assembly tool