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Spring Plungers（Tip Heat Treatment：Hardening）

A spring plunger is a mechanical device consisting of a pin or plunger enclosed within a housing, with a spring providing force to extend or retract the plunger. When not acted upon, the spring pushes the plunger outward from the housing. Applying external force compresses the spring, allowing the plunger to retract. Once the force is removed, the spring pushes the plunger back out. Some spring plungers have locking mechanisms for added stability. They are widely used in manufacturing for precise positioning, retaining objects in place, aligning components, and providing adjustable force. They can also serve as safety devices by giving feedback or triggering switches. In essence, spring plungers offer a simple yet effective solution for controlling motion and force in various applications. To select a Misumi spring plunger, consult the product specifications for factors such as size, material, spring force, and any additional features required for your specific application needs. Then, use MISUMI's online catalog or contact direct our MISUMI for assistance.

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Brand	(2) (0) KONISHI (0) NABEYA (0) NABEYA BI-TECH (6)
CAD	2D 3D
Days to Ship	All Same day 5 Day(s) or Less 6 Day(s) or Less 7 Day(s) or Less 8 Day(s) or Less Others

8 items

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: 30; 45; 60

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Short Spring Plungers - Stainless Steel

MISUMI

Products with loosening prevention have been treated with loosening prevention treatment (epoxy resin adhesive) in advance.
Workability is improved with no need for thread locking agents! Achieved reduced screw locking agent application work and stable quality of loosening prevention.

[Features that prevent loosening]
- When screwed in, the microcapsules are destroyed and hardening begins.
・Excellent chemical resistance and heat resistance.

Volume Discount

CAD ：: 2D / 3D

Outer Dia. M(mm)	Stroke S(mm)	Tip Material	Body Material	Mounting Method	Initial Load (Range)(N)	Lock	Tip Heat Treatment	Screw Type of Pin Plunger	Wrench Hole Shape	Main Body Surface Treatment	Tip Surface Treatment
3 ～ 16	1 ～ 4.5	Stainless Steel	Stainless Steel	Screw-In	0.01~50	Not Provided	Hardening	Short Stroke	Hex	Not Provided / Electroless Nickel Plating	Not Provided

From: ₹ 306.00
Days to Ship: Same day or more

Same day or more

You can add up to 6 items per a category to the compare list. Compare

Spring Plungers / Wrenches / Block Plungers - Stainless Steel

Spring Plungers / Wrenches / Block Plungers - Stainless Steel

MISUMI

Volume Discount

CAD ：: 2D / 3D

Outer Dia. M(mm)	Stroke S(mm)	Tip Material	Body Material	Mounting Method	Initial Load (Range)(N)	Lock	Tip Heat Treatment	Screw Type of Pin Plunger	Wrench Hole Shape	Main Body Surface Treatment	Tip Surface Treatment
3 ～ 16	1.5 ～ 20	Stainless Steel	Stainless Steel	Screw-In	0.01~50	Not Provided	Hardening	Spherical	Hex	Not Provided / Electroless Nickel Plating	Not Provided

From: ₹ 562.00
Days to Ship: Same day or more

Same day or more

You can add up to 6 items per a category to the compare list. Compare

Long Stroke Plunger PLP

NABEYA BI-TECH

Used for oil breakers, knockouts, and positioners. Includes anti-loosening nylon lock.

CAD ：: 2D / 3D

Outer Dia. M(mm)	Stroke S(mm)	Tip Material	Body Material	Mounting Method	Initial Load (Range)(N)	Lock	Tip Heat Treatment	Screw Type of Pin Plunger	Wrench Hole Shape	Main Body Surface Treatment	Tip Surface Treatment
12 ～ 30	10 ～ 30	Steel	Steel	Screw-In	0.01~50	Provided	Hardening	Spherical / With Hex Socket / Long Stroke	Hex	Black Oxide	Black Oxide / Trivalent Chromate

From: ₹ 1,241.55
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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Spring Plunger - PSF/PSN

NABEYA BI-TECH

[Features]
· Both of the steel and stainless steel plungers are available with plastic pins.
· PsF: Light load, steel plunger.
· PSF-SN: Light load, full stainless steel plunger.
· PSN: Light load, steel plunger with plastic pin.
· PSF-KN: Light load, stainless steel plunger with plastic pin.
· PSF-ss: Heavy load, steel plunger.

CAD ：: 2D / 3D

Outer Dia. M(mm)	Stroke S(mm)	Tip Material	Body Material	Mounting Method	Initial Load (Range)(N)	Lock	Tip Heat Treatment	Screw Type of Pin Plunger	Wrench Hole Shape	Main Body Surface Treatment	Tip Surface Treatment
3 ～ 24	1 ～ 10	Steel	Steel	Screw-In	0.01~50 / 50.01~100	Not Provided	Hardening	Spherical / With Hex Socket	Hex	Black Oxide	Black Oxide

From: ₹ 506.67
Days to Ship: 5 Day(s) or more

5 Day(s) or more

You can add up to 6 items per a category to the compare list. Compare

Small Plunger PSS

NABEYA BI-TECH

Stainless steel for high resistance to corrosion/heat.

[Features]
- PSS-2: Made of steel; light load.
- PSS-1: Made of steel, heavy load.
- PSSS-1: Made of stainless steel, heavy load.
- PSSS-3: Made of stainless steel; super-heavy load.
- The PSSS-1 and PSSS-3 are made entirely of stainless steel.
- Excellent in cutting and heat resistance.
- The PSS-2 and the PSS-1 are equipped with a nylon lock (except for M4).
- Use a locking service with the PSSS-1 and PSSS-3.
- Use the ball button BB with improved abrasion resistance for the receiving side.

CAD ：: 2D / 3D

Outer Dia. M(mm)	Stroke S(mm)	Tip Material	Body Material	Mounting Method	Initial Load (Range)(N)	Lock	Tip Heat Treatment	Screw Type of Pin Plunger	Wrench Hole Shape	Main Body Surface Treatment	Tip Surface Treatment
4 ～ 16	1.2 ～ 4.5	Steel / Stainless Steel	Steel / Stainless Steel	Screw-In	0.01~50	Not Provided / Provided	Hardening	Spherical / With Hex Socket	Hex	Not Provided / Black Oxide	Not Provided / Black Oxide / Trivalent Chromate

From: ₹ 323.18
Days to Ship: 5 Day(s) or more

5 Day(s) or more

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Short Stroke Plunger - PSP

NABEYA BI-TECH

[Features]
· With nylon welding to prevent loosening (except for M3 and M4).
· PSP-N is equipped with plastic pins.
· Does not scratch the workpiece.
· Use the dedicated plunger wrench (PPW) for pin mounting and removal.
· Use abrasion-resistant ball buttons (BB) on the receiving end.
· The manufacturer also offers custom products made to unique specifications, including dimensions, loads, and materials, etc.

CAD ：: 2D / 3D

Outer Dia. M(mm)	Stroke S(mm)	Tip Material	Body Material	Mounting Method	Initial Load (Range)(N)	Lock	Tip Heat Treatment	Screw Type of Pin Plunger	Wrench Hole Shape	Main Body Surface Treatment	Tip Surface Treatment
3 ～ 12	1.5 ～ 5	Steel	Steel	Screw-In	0.01~50	Provided	Hardening	Spherical / With Hex Socket / Short Stroke	Hex	Black Oxide / Electroless Nickel Plating	Black Oxide / Trivalent Chromate

From: ₹ 513.75
Days to Ship: 5 Day(s) or more

5 Day(s) or more

You can add up to 6 items per a category to the compare list. Compare

Small Plunger PCF

NABEYA BI-TECH

Light-load and heavy-load types available in steel and stainless steel.

CAD ：: 2D / 3D

Outer Dia. M(mm)	Stroke S(mm)	Tip Material	Body Material	Mounting Method	Initial Load (Range)(N)	Lock	Tip Heat Treatment	Screw Type of Pin Plunger	Wrench Hole Shape	Main Body Surface Treatment	Tip Surface Treatment
4 ～ 24	1.5 ～ 8	Steel	Steel	Screw-In	0.01~50 / 50.01~100	Not Provided	Hardening	Spherical	Negative	Black Oxide	Black Oxide / Trivalent Chromate

From: ₹ 288.35
Days to Ship: 5 Day(s) or more

5 Day(s) or more

You can add up to 6 items per a category to the compare list. Compare

Short Stroke Plunger PSPS

NABEYA BI-TECH

[Features]
- Short stroke plunger made of stainless steel.
- Outstanding durability.
- PSPS-NS or PSPS-NZ pins are made of plastic.
- Does not scratch the workpieces.
- Use the dedicated plunger wrench PPW for mounting or dismounting from the pin side.
- Use the ball button BB with improved abrasion resistance for the receiving side.
- Products with special dimension, load, or material specs can also be produced.

CAD ：: 2D / 3D

Outer Dia. M(mm)	Stroke S(mm)	Tip Material	Body Material	Mounting Method	Initial Load (Range)(N)	Lock	Tip Heat Treatment	Screw Type of Pin Plunger	Wrench Hole Shape	Main Body Surface Treatment	Tip Surface Treatment
4 ～ 12	2 ～ 5	Stainless Steel	Stainless Steel	Screw-In	0.01~50	Not Provided	Hardening	Spherical / With Hex Socket / Short Stroke	Hex	Not Provided	Not Provided

From: ₹ 1,374.60
Days to Ship: 5 Day(s) or more

5 Day(s) or more


Brand
Product Series
CAD
From
Days to Ship
Outer Dia. M(mm)
Stroke S(mm)
Tip Material
Body Material
Mounting Method
Initial Load (Range)(N)
Lock
Tip Heat Treatment
Screw Type of Pin Plunger
Wrench Hole Shape
Main Body Surface Treatment
Tip Surface Treatment

	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare
Brand	MISUMI	MISUMI	NABEYA BI-TECH	NABEYA BI-TECH	NABEYA BI-TECH	NABEYA BI-TECH	NABEYA BI-TECH	NABEYA BI-TECH
Product Series	Short Spring Plungers - Stainless Steel	Spring Plungers / Wrenches / Block Plungers - Stainless Steel	Long Stroke Plunger PLP	Spring Plunger - PSF/PSN	Small Plunger PSS	Short Stroke Plunger - PSP	Small Plunger PCF	Short Stroke Plunger PSPS
CAD	2D / 3D	2D / 3D	2D / 3D	2D / 3D	2D / 3D	2D / 3D	2D / 3D	2D / 3D
From	₹ 306.00	₹ 562.00	₹ 1,241.55	₹ 506.67	₹ 323.18	₹ 513.75	₹ 288.35	₹ 1,374.60
Days to Ship	Same day or more	Same day or more	5 Day(s) or more	5 Day(s) or more	5 Day(s) or more	5 Day(s) or more	5 Day(s) or more	5 Day(s) or more
Outer Dia. M(mm)	3 ～ 16	3 ～ 16	12 ～ 30	3 ～ 24	4 ～ 16	3 ～ 12	4 ～ 24	4 ～ 12
Stroke S(mm)	1 ～ 4.5	1.5 ～ 20	10 ～ 30	1 ～ 10	1.2 ～ 4.5	1.5 ～ 5	1.5 ～ 8	2 ～ 5
Tip Material	Stainless Steel	Stainless Steel	Steel	Steel	Steel / Stainless Steel	Steel	Steel	Stainless Steel
Body Material	Stainless Steel	Stainless Steel	Steel	Steel	Steel / Stainless Steel	Steel	Steel	Stainless Steel
Mounting Method	Screw-In	Screw-In	Screw-In	Screw-In	Screw-In	Screw-In	Screw-In	Screw-In
Initial Load (Range)(N)	0.01~50	0.01~50	0.01~50	0.01~50 / 50.01~100	0.01~50	0.01~50	0.01~50 / 50.01~100	0.01~50
Lock	Not Provided	Not Provided	Provided	Not Provided	Not Provided / Provided	Provided	Not Provided	Not Provided
Tip Heat Treatment	Hardening	Hardening	Hardening	Hardening	Hardening	Hardening	Hardening	Hardening
Screw Type of Pin Plunger	Short Stroke	Spherical	Spherical / With Hex Socket / Long Stroke	Spherical / With Hex Socket	Spherical / With Hex Socket	Spherical / With Hex Socket / Short Stroke	Spherical	Spherical / With Hex Socket / Short Stroke
Wrench Hole Shape	Hex	Hex	Hex	Hex	Hex	Hex	Negative	Hex
Main Body Surface Treatment	Not Provided / Electroless Nickel Plating	Not Provided / Electroless Nickel Plating	Black Oxide	Black Oxide	Not Provided / Black Oxide	Black Oxide / Electroless Nickel Plating	Black Oxide	Not Provided
Tip Surface Treatment	Not Provided	Not Provided	Black Oxide / Trivalent Chromate	Black Oxide	Not Provided / Black Oxide / Trivalent Chromate	Black Oxide / Trivalent Chromate	Black Oxide / Trivalent Chromate	Not Provided

Configure

Specification/Dimensions

Outer Dia. M(mm)
1.5

2

3

4

5

6

8

10

12

16

20

24

30
Drawing

Clear

Stroke S(mm)
1

1.2

1.5

2

2.3

2.5

3

3.5

4

4.5

5

6

6.5

7

8

9

10

11

12

15

20

30

40

50

60

70

80
Drawing

Clear

Tip Material
- Steel
- Stainless Steel
- Plastic
- Others
Clear

Body Material
- Steel
- Stainless Steel
- Aluminum
Clear

Mounting Method
- Screw-In
- Press Fit
- Screw Clamp
Clear

Initial Load (Range)(N)
- 0.01~50
- 50.01~100
Clear

Lock
- Not Provided
- Provided
Clear

Tip Heat Treatment
- Not Provided
- Hardening
- Carburized
Clear

Screw Type of Pin Plunger
- Flat
- Spherical
- Taper R
- Flanged
- Tapped Tip
- With Hex Nose
- With Hex Socket
- Short Stroke
- Long Stroke
Images

Clear

Wrench Hole Shape
- Negative
- Hex
Clear

Main Body Surface Treatment
- Not Provided
- Black Oxide
- Electroless Nickel Plating
- Nickel Plating
- Trivalent Chromate
- Others
Clear

Tip Surface Treatment
- Not Provided
- Black Oxide
- Trivalent Chromate
- Electroless Nickel Plating
- Nitriding Treatment
- Zinc Plating
Clear

Related Categories to Spring Plungers

FAQ Spring Plungers

Question: How do spring plungers contribute to the efficiency of injection molding processes?: Answer: Spring plungers boost injection molding efficiency by securely holding mold components, ensuring precise alignment for consistent results. During setup, they allow quick and effortless adjustment, reducing downtime. Their spring-loaded design maintains component position while enabling easy repositioning, simplifying the process. By streamlining setup and operation, spring plungers enhance productivity in injection molding, benefiting manufacturers by saving time and improving overall efficiency.
Question: What are spring plungers used for?: Answer: Spring plungers have a wide range of applications, especially in manufacturing. Here are some common uses:
Positioning and alignment: Spring plungers can be used to precisely position and align components during assembly.
Retention: They can hold objects in place, like detents in latches or catches in housings.
Ejection: Spring plungers can eject parts from molds or fixtures.
Applying pressure: They can apply a controlled amount of force for tasks like clamping or activating switches.
Question: What is the importance of ball plungers in automation?: Answer: Ball plungers are important in automation because they help things get in the right spot and stay there. Even though they're small, they're super good at making sure parts are in the exact place they need to be. They're used in tools and fixtures to keep stuff secure and move it exactly where it needs to go on the assembly line. Ball plungers are great because they make sure everything runs smoothly and works well, making factories more efficient and products better.
Question: What materials are spring plungers typically made of?: Answer: Spring plungers are commonly made of materials such as stainless steel, carbon steel, brass, and plastic. The choice of material depends on factors like the application requirements, environmental conditions, and desired durability.
Question: What role do locating, positioning, jigs & fixtures play in plunger technology?: Answer: Locating, positioning, jigs, and fixtures are super important in plunger technology. Locating mechanisms make sure plungers and workpieces are in the right spot for machining or assembly, reducing mistakes. Positioning devices control how plungers move, so they go exactly where they're supposed to. Jigs and fixtures hold everything in place securely during machining or assembly, which helps prevent errors and makes things work faster and better. Overall, these parts work together to make plunger technology work smoothly and produce high-quality results.
Question: What are the characteristics of spring plungers with flat tip?: Answer: Spring plungers with flat tips are versatile tools designed for precise positioning and secure holding of components. Their flat tip ensures even pressure distribution, minimizing the risk of damage to surfaces. These plungers provide strong retention force, securely holding components in place. Some models allow for adjusting the spring tension to customize the holding force. Made from durable materials like steel or stainless steel, they offer longevity and resistance to wear. They are easy to install and replace, making setup and maintenance hassle-free.
Question: What are the key considerations when selecting materials for plungers?: Answer: When selecting materials for plungers, consider their strength, durability, and corrosion resistance. Ensure they can withstand operational forces without wearing out quickly. Check if they're resistant to rust and can handle the temperatures they'll encounter. Also, factor in the cost and ease of manufacturing. By evaluating these factors, you can choose materials that meet the needs of your application, providing long-lasting performance without breaking the bank. Ultimately, selecting the right materials ensures reliable and efficient operation of plungers in various industrial settings.

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Spring Plungers（Tip Heat Treatment：Hardening）

Configure

Specification/Dimensions

Outer Dia. M(mm)

Stroke S(mm)

Tip Material

Body Material

Mounting Method

Initial Load (Range)(N)

Lock

Tip Heat Treatment

Screw Type of Pin Plunger

Wrench Hole Shape

Main Body Surface Treatment

Tip Surface Treatment

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FAQ Spring Plungers

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