Spring Plunger
  • Spring Plunger Spring Plunger
  • Spring Plunger Spring Plunger
  • Spring Plunger Spring Plunger

Spring Plunger

A spring plunger is a small, threaded body component containing a spring-loaded ball or nose that projects from one end. When the ball or nose is pushed against a mating surface or detent, the internal spring lets it retract and then return, providing a controlled, repeatable holding, locating, or indexing force. Compact yet versatile, spring plungers are widely used wherever parts need to be positioned, held, or released quickly without complex mechanisms.
  • Product Name:

    Spring Plunger/Indexing Plunger
  • Material:

    Stainless steel (SS303 / SS304); knob, body, and pin all stainless; spring in stainless steel
  • Surface Finish:

    Polished / plain stainless; passivated for corrosion resistance; knurled knob surface
  • Size:

    Body thread M6–M16; customization on request
  • Thread Type:

    External metric (M) or Imperial (UNC/UNF) body thread; standard pitch
  • Head Type:

    Round knurled knob (diamond knurl) for hand grip.
  • Drive Type:

    Hand-operated — pull knob up to retract the pin; no driver/wrench needed
  • Length Range:

    Thread length approx. [10 mm – 30 mm]; overall length per model
  • Drill Point Type:

    N/A — spring-loaded retractable pin with rounded/chamfered nose
  • Pin Diameter:

    Approx. Ø3–Ø8 mm (commonly [Ø5 / Ø6]); chamfered nose for easy engagement
  • Locking Type:

    Non-locking (hand-retractable) — pin springs back automatically on release
  • Spring Force/Pull Force:

    Rated by pin end force and pull-out force (light / standard / heavy options)
  • Suitable Material:

    Installs into tapped holes in metal; pin engages mating bores/detents in adjustable parts
  • Pin Shear Strength:

    Rated by pin shear capacity, varies with pin diameter and material
  • Applicable Standard:

    Manufacturer specifications (e.g., Halder / Elesa / JW Winco catalog standards); no single universal standard
  • Applications:

    Quick positioning and indexing of adjustable parts; jigs and fixtures, machine guards, height/length adjustment, fitness and furniture equipment, quick-release mechanisms
  • Customization:

    Customizable material, thread size, pin diameter/stroke, knob diameter, spring force, finish, OEM marking, and packaging

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Product Description

A spring plunger is a small, threaded body component containing a spring-loaded ball or nose that projects from one end. When the ball or nose is pushed against a mating surface or detent, the internal spring lets it retract and then return, providing a controlled, repeatable holding, locating, or indexing force. Compact yet versatile, spring plungers are widely used wherever parts need to be positioned, held, or released quickly without complex mechanisms.



Hot Tags: sprint plunger, indexing plunger, locking,knob,non-locking
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