Spring Plunger

Spring Plunger, also known as Spring Loaded Plunger, Ball Plunger, Pin Plunger, Indexing Plunger, Detent Plunger, Positioning Plunger or Locating Plunger, is a compact spring-loaded component used for positioning, indexing, locating, holding, locking, detent action and controlled movement in mechanical assemblies.

A Spring Plunger normally consists of a threaded body, internal spring and front ball or pin. When force is applied to the ball or pin, it retracts into the body. When the force is released, the spring pushes the ball or pin back to its original position. This simple but useful function makes Spring Plungers suitable for fixtures, jigs, sliding mechanisms, indexing holes, adjustable parts, machine guards, workholding systems, automation equipment and machinery repair applications.

Spring Plungers are commonly used when a part needs to be held in position but still allowed to move, slide, index or release when force is applied. They are useful for repeated positioning, light locking, tactile detent feel, workpiece location and component alignment in industrial and mechanical systems.

Material :

• Steel , Stainless Steel 304 (A2)

Finishing :

• Steel comes in Black Oxide Finishing

Dimensions:

Diameter Size:

• M3 , M4 , M5 , M6 , M8 , M10 , M12 , M16 and M20

Key Features:

• Spring-loaded plunger for positioning, indexing, locating and holding applications
• Also known as spring loaded plunger, ball plunger, pin plunger, detent plunger or positioning plunger
• Internal spring allows the ball or pin to retract under load and return by spring force
• Suitable for repeated positioning and mechanical detent applications
• Threaded body allows easy installation into tapped holes
• Compact design suitable for jigs, fixtures, machine parts and automation equipment
• Helps provide controlled holding force without permanent locking
• Useful for sliding mechanisms, adjustable components and workpiece location
• Steel option suitable for general machinery, tooling and industrial applications
• Stainless Steel 304 (A2) option suitable for better corrosion resistance and cleaner appearance
• Steel comes in Black Oxide Finishing
• Available diameter sizes include M3, M4, M5, M6, M8, M10, M12, M16 and M20
• Practical for maintenance, repair, replacement, production assembly and project supply

Applications:

Spring Plunger is commonly used in:

• Jig and fixture positioning
• Workpiece location and holding
• Sliding mechanism positioning
• Indexing holes and locating points
• Detent and click-stop mechanisms
• Adjustable machine parts
• Machine guard and cover positioning
• Automation machine assembly
• CNC machine and production equipment
• Mould, die and tooling applications
• Aluminium profile and machine frame systems
• Equipment panel and bracket positioning
• Door, latch and light locking mechanisms
• Factory maintenance and MRO work
• General commercial and industrial mechanical applications

Common Related Names

Spring Loaded Plunger

• A common technical name for a plunger with an internal spring-loaded ball or pin.

Ball Plunger

• Used when the front contact point is a ball, commonly for detent, positioning and sliding applications.

Pin Plunger

• Used when the front contact point is a pin, often for locating, indexing or holding applications.

Indexing Plunger

• Used when the plunger is selected for repeated positioning, alignment or indexing holes.

Detent Plunger

• Used when the plunger provides a click-stop, holding feel or controlled release action.

Positioning Plunger

• Used when the main purpose is locating or holding a component in position.

Why Choose Our Spring Plunger

Choosing the correct Spring Plunger is important for positioning accuracy, holding force, movement control, thread fitment, corrosion resistance and long-term reliability. The plunger should match the thread size, plunger type, ball or pin style, spring force, material, finishing, installation depth, mating surface, hole design and working environment.

Steel Spring Plunger with Black Oxide Finishing is a practical option for general machinery, indoor equipment, jigs, fixtures, tooling, automation systems, sliding parts, locating mechanisms and industrial maintenance applications. Stainless Steel 304 (A2) Spring Plunger is suitable when better corrosion resistance, cleaner appearance and stainless steel material compatibility are required.

The spring-loaded design is useful when the application needs temporary holding, repeatable positioning or controlled movement without permanent locking. The ball or pin can retract when the mating part moves across it, then return by spring force to hold or locate the next position. This makes it suitable for sliding plates, indexing holes, adjustable parts, fixture stops, machine covers and workholding systems.

Spring Plunger is also useful for maintenance and replacement work because many machines and fixtures require a specific thread size, body length, ball or pin diameter and spring force. Users should confirm whether the existing part is a ball plunger, pin plunger, indexing plunger or another spring-loaded device before ordering.

For best performance, the plunger should be installed into the correct tapped hole and adjusted to the required depth or preload. If too tight, the plunger may restrict movement. If too loose, the holding or locating force may be insufficient. For high-load, high-speed, safety-related, vibration-prone or critical machinery assemblies, spring force, plunger travel, load direction, mating surface hardness and mounting design should be checked by a qualified person or project specification.

We supply Spring Plunger for machinery users, factories, maintenance departments, automation machine builders, jig and fixture makers, tooling workshops, mould and die users, equipment manufacturers, metal fabricators, engineering companies, CNC machine users, workholding system users, aluminium profile users, workshop users, hardware resellers and industrial customers in Selangor, Kuala Lumpur and across Malaysia, including Klang, Shah Alam, Puchong, Petaling Jaya, Subang, Port Klang, Balakong, Cheras, Kajang, Rawang, Semenyih, Ampang, Banting, Putrajaya, Cyberjaya and Seremban.