What role does a spring plunger play?

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.

What is the meaning of max load and min load?

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.

What is the difference between a ball plunger and a spring plunger?

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.

Please note that the MISUMI Pune office and warehouse will be closed on November 20th due to the state election.
Notice of End of Sales for Economy Series Pneumatic Equipment Category. More information.

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Part Number Complete

E-LSPJY12

Load Type Content type Outer Dia. M Stroke (S) Pin Material Body Material Initial Load (Range) Main Body Surface Treatment Min. Load CAD Days to Ship

Specification/Dimensions

Load Type
- Light load
- Ultra heavy load
Clear
Content
- Light Load
- Ultra Heavy Load
Clear
type
- E-LSPJY
- E-LSPRK
- E-LSPRX
- E-LSPRY
- E-LSPRZ
Clear
Outer Dia. M(mm)
3

4

5

6

8

10

12

16
Clear
Stroke (S)(mm)
1

1.2

1.5

2

2.5

3.5

4.5
Clear
Pin Material
- Stainless Steel
  - Stainless Steel
- Others
  - Resin
Clear
Body Material
- Stainless Steel
  - Stainless Steel
Clear
Initial Load (Range)(N)
- 0.01~50
Clear
Main Body Surface Treatment
- Not Provided
- Electroless Nickel Plating
Clear
Min. Load(N)
0.11

0.5

0.51

0.62

0.8

0.97

1

1.16

1.54

1.6

1.81

2

2.8

3

3.1

3.6

4

4.2

4.6

5.1

5.5

6

6.1

9

9.4

9.6

9.9

10.4

13

13.5

18

19

19.1

24.5

26.6
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

Same day

10 Day(s) or Less

14 Day(s) or Less

19 Day(s) or Less
Clear

Specify Alterations

Spring Plungers Stainless Steel, Short Stroke (E-LSPJY12)

Volume Discount

Check FAQ of this product (3 items)

Brand :

MiSUMi Economy

Order Qty :
Total Price :

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Days to ship :

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CAD Download

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.

Dimensional Drawing

Material Specification

Load Classification		Type	Body	Pin		Spring
			Material	Material	Hardness	Material
Stainless Steel Convex Pin	Light Load	C－SPJK	SUS304	SUS303	20HRC～	SUS304
	Ultra Heavy Load	C－SPJX

Load Classification		Type	Body	Pin	Spring
			Material	Material	Material
Stainless Steel Convex Pin	Ultra Light Load	E－LSPJY	SUS304	SUS303	SUS304
Resin Convex Pin	Utra Light Load	E－LSPRY		POM
	Light Load	E－LSPRK
	Heavy Load	E－LSPRZ
	Ultra Heavy Load	E－LSPRX

Specification Table

Part Number		d	Stroke S	L	ℓ (Reference Value)	B	Light Load		Ultra Heavy Load
Type	O.D. M (Coarse Thread)						Load (N)		Load (N)
Type	O.D. M (Coarse Thread)						min.	max.	min.	max.
C－SPJK (Light Load) C－SPJX (Ultra Heavy Load)	3	1.2	1	10	3	1.5	1	2	－	－
	4	2.1	1.2	10	2	2	2	5	4	12
	5	2.7	1.5	12	2.5	2.5	2	8	6	24
	6	3.2	1.5	12	3	3	3	10	9	30
	8	4	2	16	3.5	4	4	11	13	45
	10	5	2.5	16	4	5	4	15	19	50

kgf=N×0.101972

The min. load represents the initial load, and the max. load represents the load at the maximum press-in limit of convex pin.

There is no groove for front end riveting.

No anti-loosening treatment is applied.

C-SPJX (Ultra Heavy Load) is for O.D. M4~M10 only.

Part Number		d	Stroke S	L	ℓ (Reference Value)	B	Ultra Light Load		Light Load		Heavy Load		Ultra Heavy Load
Type	O.D. M (Coarse Thread)						Load (N)		Load (N)		Load (N)		Load (N)
Type	O.D. M (Coarse Thread)						min.	max.	min.	max.	min.	max.	min.	max.
(Stainless Steel Convex Pin) E－LSPJY (Resin Convex Pin) E－LSPRY E－LSPRK E－LSPRZ E－LSPRX	3	1.2	1	7	1	1.5	0.11	0.49	0.5	1.51	0.8	2	-	-
	4	2.1	1.2	9	1.5	2	0.51	1.54	1.6	4.8	2	9	4	11.5
	5	2.7	1.5	12	2	2.5	0.62	2.49	2	7.9	5.1	14.7	6	24.2
	6	3.2	1.5	13	2.5	3	0.97	3.06	2.8	9.9	5.5	19.6	9.4	29.5
	8	4	2	15	2.5	4	1.16	3.26	3.6	10.9	6.1	19.6	13.5	43.7
	10	5	2.5	16	3	5	1.54	4.76	4.2	14.6	9.6	29.4	19.1	53.3
	12	6	3.5	20	3	6	1.81	4.82	4.6	14.8	10.4	29.4	24.5	58.8
	16	8	4.5	22	3	8	3.1	9.1	9.9	29.3	18	58.8	26.6	78.7

Product Features

♢ 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 front end has a wrench slot, and the bottom end has a hex socket mounting hole, which facilitates installation.
♢ The stroke can be fine-tuned correspondingly to the screw-in depth.
♢ 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

Part Number

Incomplete part number.
Please use left hand selections to complete a part number.

: 30; 45; 60

Part Number
E-LSPJY12

Part Number	Price	Minimum Order Qty.	Volume Discount	Days to Ship	RoHS	Outer Dia. M (mm)	Stroke (S) (mm)	Pin Material	Body Material	Initial Load (Range) (N)	Main Body Surface Treatment	Min. Load (N)	Max. Load (N)	Load Type	Content
	₹ 997.00	1 Piece(s)	Available	10 Day(s)	10	12	3.5	[Stainless Steel] Stainless Steel	[Stainless Steel] Stainless Steel	0.01~50	Not Provided	1.81	4.82	-	-

Basic Information

Mounting Method	Screw-In	Thread Locking Treatment	Not Provided	Tip Heat Treatment	Not Provided
Wrench Hole Shape	Hex	Pin Surface Treatment	Not Provided

Please check the type/dimensions/specifications of the part E-LSPJY12 in the Spring Plungers Stainless Steel, Short Stroke series.

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

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.

Product variants

Part Number
C-SPJK4
C-SPJK5
C-SPJK6
E-LSPJY16
E-LSPJY3
E-LSPJY4

Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Outer Dia. M (mm)	Stroke (S) (mm)	Pin Material	Body Material	Initial Load (Range) (N)	Main Body Surface Treatment	Min. Load (N)	Max. Load (N)	Load Type	Content
₹ 124.00	1 Piece(s)	Available	Same day Stock	10	4	1.2	[Stainless Steel] Stainless Steel	[Stainless Steel] Stainless Steel	0.01~50	Electroless Nickel Plating	2	5	Light load	Light Load
₹ 124.00	1 Piece(s)	Available	Same day Stock	10	5	1.5	[Stainless Steel] Stainless Steel	[Stainless Steel] Stainless Steel	0.01~50	Electroless Nickel Plating	2	8	Light load	Light Load
₹ 131.00	1 Piece(s)	Available	Same day Stock	10	6	1.5	[Stainless Steel] Stainless Steel	[Stainless Steel] Stainless Steel	0.01~50	Electroless Nickel Plating	3	10	Light load	Light Load
₹ 1,078.00	1 Piece(s)	Available	10 Day(s)	10	16	4.5	[Stainless Steel] Stainless Steel	[Stainless Steel] Stainless Steel	0.01~50	Not Provided	3.1	9.1	-	-
₹ 957.00	1 Piece(s)	Available	10 Day(s)	10	3	1	[Stainless Steel] Stainless Steel	[Stainless Steel] Stainless Steel	0.01~50	Not Provided	0.11	0.49	-	-
₹ 953.00	1 Piece(s)	Available	10 Day(s)	10	4	1.2	[Stainless Steel] Stainless Steel	[Stainless Steel] Stainless Steel	0.01~50	Not Provided	0.51	1.54	-	-

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