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Micro Spring Plungers Short Body


Product Overview
♢ This series is MISUMI economy series stainless steel spring plunger with coarse threads and mounted from the hexagon socket at the bottom. It is manufactured in China, so its price is reduced significantly, up to 93% less than other similar products.
♢ The spring plunger is also known as the positioning column, ball screw, spring screw, etc. It is a product involving vertical stroke, in which the front pin is pressed till the pin sinks into the body and then the front pin can be ejected through the built-in spring. It can be used in mold release, workpiece lifting and
positioning, etc., which can be widely applied in medium and low-precision mechanical devices, fixtures, molds, automation machines, etc.
Product Feature
♢ It has complete specifications, which can satisfy the requirements of various sizes, lengths, and loads.
♢ It is made of all stainless steel without painting and coloring, so it is suitable for equipment with high requirements on the surface.
♢ The spring plunger is a product involving vertical stroke. It can be used in mold release, workpiece lifting and positioning, etc., which can be widely applied in medium and low-precision mechanical devices, fixtures, molds, automation machines, etc.
Example of Use
When pressed down
Usage Method 1
When released
Usage Method 2
Related Products

Part Number 

CAD Data download and 3D preview are not available because the part number has not yet been determined.

  • *In order to open the CAD Data download and 3D preview screen, the part number must be fixed.
  • Please confirm the part number from "Specification / Dimension"on the left side, and then perform the CAD Data Download / 3D Preview operation.
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Part Number
C-MPFS2-1.5
C-MPFS3-3
C-MPFS4-3
C-MPFS5-4
C-MPJS2-1.5
C-MPJS3-3
C-MPJS4-3
C-MPJS5-4
Part NumberMinimum order quantityVolume DiscountDays to ShipOuter Dia. M
(mm)
Stroke (S)
(mm)
Screw Type of Pin Plunger Max. Load
(N)
Pin plunger type
10 Piece(s)Available 10 Day(s) 21.5Flat1Flat head
10 Piece(s)Available 10 Day(s) 33Flat1.5Flat head
10 Piece(s)Available 10 Day(s) 43Flat1.5Flat head
1 Piece(s)Available Same day 54Flat2Flat head
10 Piece(s)Available 10 Day(s) 21.5Spherical Type1Spherical type
10 Piece(s)Available 10 Day(s) 33Spherical Type1.5Spherical type
1 Piece(s)Available Same day 43Spherical Type1.5Spherical type
1 Piece(s)Available Same day 54Spherical Type2Spherical type

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  1. 1

Dimensional Drawing
・Material Specification table
Load ClassificationTypeBodyPinSpringOperating Temperature
Flat HeadSpherical Material Material Material
Light LoadC-MPFSC-MPJSSUS303SUS303SUS304-30 to 140℃

Dimensional Drawing
Specification Table
Part NumberSdD1LCLight Load (N)
TypeDh7min.max.
(Flat Head)
C-MPFS
(Spherical)
C-MPJS
21.512.580.10.51.0
3323.5100.150.51.5
4334.5100.20.61.5
5445.511.50.30.62.0
The min. load represents the initial load, and the max. load represents the load at the maximum press-in limit of convex pin.
The recommended mounting hole size is Dh7.
Please use it after applying adhesive to prevent it from falling off.
kgf=N× 0.101972

Basic Information

Pin Material SUS303 Body Material SUS303

Frequently asked question (FAQ)

Question: What role does a spring plunger play?
Answer: By controlling the screw-in depth for threads, it enables the internal pin to set the preload and perform up and down stroke movement. It is suitable for mechanical devices, fixtures, molds, automated machinery, etc.
Question: What is the meaning of max load and min load?
Answer: It refers to the load of the product. The min load represents the initial load value, and the max load represents the load value at the maximum press-in stroke.
Question: What is the difference between a ball plunger and a spring plunger?
Answer: A ball plunger is headed with a steel ball and its stroke is the displacement of the ball. A spring plunger has a pin-shaped front section and the displacement stroke of the pin is used for such purposes as temporary positioning, mold demoulding and workpiece lifting.

Tech Support