M12 x 1.5 x 6 x 20 index plunger orange Aluminium mushroom grip parking

What Are Parking Index Plungers?

These Parking Index Plungers are a precision-engineered positioning and locking component designed for industrial, mechanical, and assembly applications where controlled indexing and secure engagement are required. This plunger combines manual control with reliable spring-loaded performance for repeatable locating, locking, and adjustment tasks.

The assembly is built around a spring-loaded plunger mechanism featuring a hardened steel pin and blackened steel body for strength and long-term durability under repeated use. A stainless steel spring provides a consistent push-out force, ensuring the plunger engages each cycle.

This version includes a orange aluminium mushroom-style knob, offering a comfortable, robust, and corrosion-resistant hand surface for pulling and releasing the plunger. The mushroom shape enhances grip and control, making it easy to actuate the mechanism manually, even in demanding environments.

The parking function is a key feature of these models: when retracted and rotated into the parked position, the plunger remains locked in its withdrawn state until released. This allows machines and assemblies to be repositioned or adjusted without interference from an immediately extending pin, improving workflow and safety in applications where temporary disengagement is needed.