Metric Steel Locking Plungers feature push-push mechanism.

Press Release Summary:

Series GN 514 features indexing pin moved via spring-operated cardioid curve. By pressing operating button, cardioid mechanism causes indexing pin to extend and retract (push-push locking mechanism). Indexing pin cannot absorb any axial forces, and it retracts virtually by spring action. RoHS-compliant series has body of nitrided steel with blackened finish and knob of matte black technopolymer plastic. Optional metric lock nut, ISO 8675, is steel with blackened finish.

Original Press Release:

Locking Plungers with Push-Push Mechanism from J.W. Winco, Inc.

NEW BERLIN, WI - J.W. Winco, Inc., a leading supplier of standard industrial machine components, announced it now offers series GN 514 Steel Locking Plungers with Push-Push Locking Mechanism, in metric sizes. The indexing pin in this locking plunger is moved by means of a spring-operated cardioid curve. By simply pressing the operating button, this cardioid mechanism causes the indexing pin to extend and retract (push-push locking mechanism). This function is similar to that used in a ballpoint pen. Please note that the indexing pin cannot absorb any axial foces and that it retracts virtually by spring action; the indexing pin must therefore remain free and easy to move. The body of these RoHS compliant locking plungers is made of nitrided steel with a blackened finish. The knob is matte black technopolymer plastic (Polyamide PA), and the optional metric lock nut, ISO 8675, is steel with a blackened finish. Installation can be done with spacer bushings (purchased separately) instead of the lock nut. J.W. Winco offers an extensive selection of inch and metric size adjustable levers, cabinet U-handles, plastic and steel hinges and locking mechanisms, revolving and retractable handles, hand wheels, hand cranks, tube connection and conveyor components, inch and metric construction tubing, shock absorption mounts, leveling mounts, hand knobs, spring, ball and indexing plungers, jig, fixture and fastening components, retaining magnet assemblies, toggle clamps, metric casters and wheels, universal joints, oil sight glasses, and metric tools for the industrial and commercial equipment industries. J.W. Winco's website catalog, with 3D CAD and online buying, is viewable at For more information, contact J.W. Winco at 800-877-8351, by fax at 800-472-0670, on the Web at, and via e-mail at

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