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NW Ball Plungers

NW ball plungers—also called spring plungers or detent plungers—are spring-loaded components used to create a repeatable detent, indexing point, or light holding force in fixtures and mechanical assemblies (application dependent). They’re commonly used to locate adjustable parts, provide “click-stop” positioning, and maintain consistent engagement in guards, covers, slides, and modular workholding setups. Because the feel and retention depend heavily on spring force and ball size, ball plungers are typically selected by specification.

NORTHWESTERN TOOLS 10400 Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.093 Ball Dia. X End Force: 0.75 Initial x 2.5 Final

NORTHWESTERN TOOLS 10400 Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.093 Ball Dia. X End Force: 0.75 Initial x 2.5 Final

SKU: NW-10400
MPN: 10400

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NORTHWESTERN TOOLS 10400A Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.125 Body Dia. X End Force: 1.5 Initial x 3.5 Final

NORTHWESTERN TOOLS 10400A Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.125 Body Dia. X End Force: 1.5 Initial x 3.5 Final

SKU: NW-10400A
MPN: 10400A

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NORTHWESTERN TOOLS 10401 Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.156 Ball Dia. X End Force: 2.0 Initial x 5.0 Final

NORTHWESTERN TOOLS 10401 Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.156 Ball Dia. X End Force: 2.0 Initial x 5.0 Final

SKU: NW-10401
MPN: 10401

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NORTHWESTERN TOOLS 10402 Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.187 Ball Dia. X End Force: 3.0 Initial x 7.0 Final

NORTHWESTERN TOOLS 10402 Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.187 Ball Dia. X End Force: 3.0 Initial x 7.0 Final

SKU: NW-10402
MPN: 10402

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NORTHWESTERN TOOLS 10402A Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.250 Ball Dia. X End Force: 4.0 Initial x 10.0 Final

NORTHWESTERN TOOLS 10402A Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.250 Ball Dia. X End Force: 4.0 Initial x 10.0 Final

SKU: NW-10402A
MPN: 10402A

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NORTHWESTERN TOOLS 10403 Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.312 Ball Dia. X End Force: 5.0 Initial x 14.0 Final

NORTHWESTERN TOOLS 10403 Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.312 Ball Dia. X End Force: 5.0 Initial x 14.0 Final

SKU: NW-10403
MPN: 10403

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NORTHWESTERN TOOLS 10404 Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.437 Ball Dia. X End Force: 8.0 Initial x 18.0 Final

NORTHWESTERN TOOLS 10404 Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.437 Ball Dia. X End Force: 8.0 Initial x 18.0 Final

SKU: NW-10404
MPN: 10404

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NORTHWESTERN TOOLS 10405 Press Fit Ball Plunger - Stainless Ball, Heavy Pressure 0.093 Ball Dia. X End Force: 2.0 Initial x 5.0 Final

NORTHWESTERN TOOLS 10405 Press Fit Ball Plunger - Stainless Ball, Heavy Pressure 0.093 Ball Dia. X End Force: 2.0 Initial x 5.0 Final

SKU: NW-10405
MPN: 10405

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NORTHWESTERN TOOLS 10405A Press Fit Ball Plunger - Stainless Ball, Heavy Pressure 0.125 Body Dia. X End Force: 4.0 Initial x 10.0 Final

NORTHWESTERN TOOLS 10405A Press Fit Ball Plunger - Stainless Ball, Heavy Pressure 0.125 Body Dia. X End Force: 4.0 Initial x 10.0 Final

SKU: NW-10405A
MPN: 10405A

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NORTHWESTERN TOOLS 10406 Press Fit Ball Plunger - Stainless Ball, Heavy Pressure 0.156 Ball Dia. X End Force: 4.0 Initial x 10.0 Final

NORTHWESTERN TOOLS 10406 Press Fit Ball Plunger - Stainless Ball, Heavy Pressure 0.156 Ball Dia. X End Force: 4.0 Initial x 10.0 Final

SKU: NW-10406
MPN: 10406

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NORTHWESTERN TOOLS 10407 Press Fit Ball Plunger - Stainless Ball, Heavy Pressure 0.187 Ball Dia. X End Force: 6.0 Initial x 13.0 Final

NORTHWESTERN TOOLS 10407 Press Fit Ball Plunger - Stainless Ball, Heavy Pressure 0.187 Ball Dia. X End Force: 6.0 Initial x 13.0 Final

SKU: NW-10407
MPN: 10407

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NORTHWESTERN TOOLS 10407A Press Fit Ball Plunger - Stainless Ball, Heavy Pressure 0.250 Ball Dia. X End Force: 8.0 Initial x 16.0 Final

NORTHWESTERN TOOLS 10407A Press Fit Ball Plunger - Stainless Ball, Heavy Pressure 0.250 Ball Dia. X End Force: 8.0 Initial x 16.0 Final

SKU: NW-10407A
MPN: 10407A

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NORTHWESTERN TOOLS 10408 Press Fit Ball Plunger - Stainless Ball, Heavy Pressure 0.312 Ball Dia. X End Force: 10.0 Initial x 18.0 Final

NORTHWESTERN TOOLS 10408 Press Fit Ball Plunger - Stainless Ball, Heavy Pressure 0.312 Ball Dia. X End Force: 10.0 Initial x 18.0 Final

SKU: NW-10408
MPN: 10408

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NORTHWESTERN TOOLS 10409 Press Fit Ball Plunger - Stainless Ball, Heavy Pressure 0.437 Ball Dia. X End Force: 12.0 Initial x 23.0 Final

NORTHWESTERN TOOLS 10409 Press Fit Ball Plunger - Stainless Ball, Heavy Pressure 0.437 Ball Dia. X End Force: 12.0 Initial x 23.0 Final

SKU: NW-10409
MPN: 10409

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NORTHWESTERN TOOLS 10410 Press Fit Ball Plunger - Stainless Ball, Light Pressure 0.093 Ball Dia. X End Force: 0.5 Initial x 1.0 Final

NORTHWESTERN TOOLS 10410 Press Fit Ball Plunger - Stainless Ball, Light Pressure 0.093 Ball Dia. X End Force: 0.5 Initial x 1.0 Final

SKU: NW-10410
MPN: 10410

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NORTHWESTERN TOOLS 10410A Press Fit Ball Plunger - Stainless Ball, Light Pressure 0.125 Ball Dia. x End Force: 0.75 Initial x 2.0 Final

NORTHWESTERN TOOLS 10410A Press Fit Ball Plunger - Stainless Ball, Light Pressure 0.125 Ball Dia. x End Force: 0.75 Initial x 2.0 Final

SKU: NW-10410A
MPN: 10410A

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NORTHWESTERN TOOLS 10411 Press Fit Ball Plunger - Stainless Ball, Light Pressure 0.156 Ball Dia. x End Force: 1.0 Initial x 2.5 Final

NORTHWESTERN TOOLS 10411 Press Fit Ball Plunger - Stainless Ball, Light Pressure 0.156 Ball Dia. x End Force: 1.0 Initial x 2.5 Final

SKU: NW-10411
MPN: 10411

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NORTHWESTERN TOOLS 10412 Press Fit Ball Plunger - Stainless Ball, Light Pressure 0.187 Ball Dia. X End Force: 1.5 Initial x 3.5 Final

NORTHWESTERN TOOLS 10412 Press Fit Ball Plunger - Stainless Ball, Light Pressure 0.187 Ball Dia. X End Force: 1.5 Initial x 3.5 Final

SKU: NW-10412
MPN: 10412

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NORTHWESTERN TOOLS 10412A Press Fit Ball Plunger - Stainless Ball, Light Pressure 0.250 Ball Dia. X End Force: 2.0 Initial x 5.0 Final

NORTHWESTERN TOOLS 10412A Press Fit Ball Plunger - Stainless Ball, Light Pressure 0.250 Ball Dia. X End Force: 2.0 Initial x 5.0 Final

SKU: NW-10412A
MPN: 10412A

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NORTHWESTERN TOOLS 10413 Press Fit Ball Plunger - Stainless Ball, Light Pressure 0.312 Ball Dia. X End Force: 2.5 Initial x 7.0 Final

NORTHWESTERN TOOLS 10413 Press Fit Ball Plunger - Stainless Ball, Light Pressure 0.312 Ball Dia. X End Force: 2.5 Initial x 7.0 Final

SKU: NW-10413
MPN: 10413

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NORTHWESTERN TOOLS 10414 Press Fit Ball Plunger - Stainless Ball, Light Pressure 0.437 Ball Dia. X End Force: 4.0 Initial x 9.0 Final

NORTHWESTERN TOOLS 10414 Press Fit Ball Plunger - Stainless Ball, Light Pressure 0.437 Ball Dia. X End Force: 4.0 Initial x 9.0 Final

SKU: NW-10414
MPN: 10414

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NORTHWESTERN TOOLS 10420 Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.093 Ball Dia. X End Force: 0.75 Initial x 2.5 Final

NORTHWESTERN TOOLS 10420 Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.093 Ball Dia. X End Force: 0.75 Initial x 2.5 Final

SKU: NW-10420
MPN: 10420

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NORTHWESTERN TOOLS 10420A Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.125 Body Dia. X End Force: 1.5 Initial x 3.5 Final

NORTHWESTERN TOOLS 10420A Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.125 Body Dia. X End Force: 1.5 Initial x 3.5 Final

SKU: NW-10420A
MPN: 10420A

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NORTHWESTERN TOOLS 10421 Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.156 Ball Dia. X End Force: 2.0 Initial x 5.0 Final

NORTHWESTERN TOOLS 10421 Press Fit Ball Plunger - Stainless Ball, Medium Pressure 0.156 Ball Dia. X End Force: 2.0 Initial x 5.0 Final

SKU: NW-10421
MPN: 10421

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