JG Spring Plungers

Jergens Spring Plungers | Precision Spring-Loaded Position Control Solutions

JG spring plungers—also called ball plungers or detent plungers—are spring-loaded components used to create a detent, indexing point, or light holding force in fixtures and mechanical assemblies (application dependent). They’re commonly used for positioning adjustable parts, providing “click-stop” engagement, and maintaining repeatable alignment in guards, covers, and modular workholding setups. Because the feel and retention depend on force and tip style, spring plungers are typically selected by specification rather than by general description.

Delrin Tip / Steel Spring Plungers

Jergens Spring Plungers, unlike conventional spring plungers, are machined in one piece. The spring is assembled from the top so that there is no need for a set screw. Our Spring Plungers do not have a set screw that can loosen or separate from the plunger body. The advantage is no lost springs and no need for “easy-out” tools. When adjusting Solid Drive, you can be sure the plunger body is turning and not a set screw.

Stainless Steel Spring Plungers

Delrin Tip / Stainless Steel Spring Plungers

Steel Spring Plungers

Jergens Solid Drive Plunger is one integral piece of steel: hex drive, plunger, and body. No set screw to separate from plunger body, no lost springs to retrieve, no need for “easy-out” tools. Best of all, when adjusting Solid Drive, you can be sure the spring plunger is turning and not just a set screw.

Jergens Spring Plungers | Precision Spring-Loaded Position Control Solutions

Delrin Tip / Steel Spring Plungers

Stainless Steel Spring Plungers

Delrin Tip / Stainless Steel Spring Plungers

Steel Spring Plungers

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JERGENS SPRING PLUNGER, 5/16-18 HF +, STEEL TIP - 26826

SKU: JG-26826
MPN: 26826

JERGENS SPRING PLUNGER, 5/16-18 HF +, STEEL TIP, LOCKING - 26926

SKU: JG-26926
MPN: 26926

JERGENS SPRING PLUNGER, 5/16-18 LF +, STEEL TIP - 27226

SKU: JG-27226
MPN: 27226

JERGENS SPRING PLUNGER, 5/16-18 LF +, STEEL TIP, LOCKING - 27326

SKU: JG-27326
MPN: 27326

JERGENS SPRING PLUNGER, 5/16-18, HF, DELRIN TIP, SOLID DRIVE - 30426

SKU: JG-30426
MPN: 30426

JERGENS SPRING PLUNGER, 5/16-18, HF, DELRIN TIP, SOLID DRIVE LOCKING - 30526

SKU: JG-30526
MPN: 30526

JERGENS SPRING PLUNGER, 5/16-18, LF, DELRIN TIP, SOLID DRIVE - 30826

SKU: JG-30826
MPN: 30826

JERGENS SPRING PLUNGER, 5/16-18, LF, DELRIN TIP, SOLID DRIVE LOCKING - 30926

SKU: JG-30926
MPN: 30926

JERGENS SPRING PLUNGER, 5/8-11 HF +, STEEL TIP - 26829

SKU: JG-26829
MPN: 26829

JERGENS SPRING PLUNGER, 5/8-11 HF +, STEEL TIP, LOCKING - 26929

SKU: JG-26929
MPN: 26929

JERGENS SPRING PLUNGER, 5/8-11 LF +, STEEL TIP - 27229

SKU: JG-27229
MPN: 27229

JERGENS SPRING PLUNGER, 5/8-11 LF +, STEEL TIP, LOCKING - 27329

SKU: JG-27329
MPN: 27329

JERGENS SPRING PLUNGER, 5/8-11, HF, DELRIN TIP, SOLID DRIVE - 30429

SKU: JG-30429
MPN: 30429

JERGENS SPRING PLUNGER, 5/8-11, HF, DELRIN TIP, SOLID DRIVE LOCKING - 30529

SKU: JG-30529
MPN: 30529

JERGENS SPRING PLUNGER, 5/8-11, LF, DELRIN TIP, SOLID DRIVE - 30829

SKU: JG-30829
MPN: 30829

JERGENS SPRING PLUNGER, 5/8-11, LF, DELRIN TIP, SOLID DRIVE LOCKING - 30929

SKU: JG-30929
MPN: 30929

JERGENS SPRING PLUNGER, 6-32 HF +, STEEL TIP - 26821

SKU: JG-26821
MPN: 26821

JERGENS SPRING PLUNGER, 6-32 HF +, STEEL TIP, LOCKING - 26921

SKU: JG-26921
MPN: 26921

JERGENS SPRING PLUNGER, 6-32 LF +, STEEL TIP - 27221

SKU: JG-27221
MPN: 27221

JERGENS SPRING PLUNGER, 6-32 LF +, STEEL TIP, LOCKING - 27321

SKU: JG-27321
MPN: 27321

JERGENS SPRING PLUNGER, 6-32, HF, DELRIN TIP, SOLID DRIVE - 30421

SKU: JG-30421
MPN: 30421

JERGENS SPRING PLUNGER, 6-32, HF, DELRIN TIP, SOLID DRIVE LOCKING - 30521

SKU: JG-30521
MPN: 30521

JERGENS SPRING PLUNGER, 6-32, LF, DELRIN TIP, SOLID DRIVE - 30821

SKU: JG-30821
MPN: 30821

JERGENS SPRING PLUNGER, 6-32, LF, DELRIN TIP, SOLID DRIVE LOCKING - 30921

SKU: JG-30921
MPN: 30921