Nickel-Plated Steel Spring-Loaded Indexing Plunger

Nickel-Plated Steel Indexing Plungers – Non-Lock-Out Spring Return

Carbon Steel Body | Nickel-Plated Finish | Plastic Pull Knob | Industrial Positioning Components

Juxin Fasteners supplies nickel-plated carbon steel indexing plungers with plastic pull knobs and non-lock-out spring-return mechanisms for industrial machinery, 

automation equipment, assembly fixtures and mechanical positioning applications.

Our indexing plunger portfolio also includes stainless steel, all-stainless-steel, compact miniature, carbon steel and stainless steel with plastic-base configurations. 

Both spring-return and lock-out operating mechanisms are available across selected product families.

Product Specifications – Featured Model

How Does a Non-Lock-Out Indexing Plunger Work?

A non-lock-out indexing plunger uses an internal compression spring to return the locating pin toward its extended position when the operator releases the pull knob.

The operator pulls the knob to retract the pin, adjusts the machine component or fixture, and releases the knob to allow the pin to re-engage when the mating locating hole is aligned.

Unlike lock-out indexing plungers, non-lock-out models cannot intentionally hold the pin in the retracted position without continuous manual operation.

Available Indexing Plunger Types & Sizes

Juxin Fasteners offers a broad range of indexing plungers for different mounting, material, positioning and operating requirements.

The following configurations are organized by material, structural design, operating mechanism and metric thread size.

1. Ultra-Miniature Stainless Steel Indexing Plungers

Compact stainless steel indexing plungers for space-constrained positioning mechanisms and miniature mechanical assemblies.

Lock-Out Type:

• M5 × 0.8

• M5 × 0.5 – Fine Thread

Non-Lock-Out / Spring-Return Type:

• M5 × 0.8

• M5 × 0.5 – Fine Thread

2. All-Stainless-Steel Indexing Plungers – Standard Metric Threads

All-stainless-steel configurations for industrial positioning applications requiring stainless steel construction.

Non-Lock-Out / Spring-Return Type:

• M6

• M8

• M10

Lock-Out / Rest-Position Type:

• M6

• M8

• M10

3. All-Stainless-Steel Indexing Plungers – Fine Metric Threads

Fine-thread configurations for equipment requiring specific mounting thread pitches.

Non-Lock-Out / Spring-Return Type:

• M6 × 0.75

• M8 × 1.0

• M10 × 1.0

Lock-Out / Rest-Position Type:

• M6 × 0.75

• M8 × 1.0

• M10 × 1.0

4. Carbon Steel Indexing Plungers

Carbon steel indexing plungers for general industrial machinery, fixtures and adjustable mechanical assemblies.

Non-Lock-Out / Spring-Return Type:

• M6

• M8

• M10

Lock-Out / Rest-Position Type:

• M6

• M8

• M10

5. Stainless Steel Indexing Plungers with Plastic Base – Standard Metric Threads

Stainless steel and plastic-base configurations for applications requiring a combined metal-and-polymer assembly.

Non-Lock-Out / Spring-Return Type:

• M6

• M8

• M10

Lock-Out / Rest-Position Type:

• M6

• M8

• M10

6. Nickel-Plated Carbon Steel Indexing Plungers

Nickel-plated carbon steel configurations for industrial positioning systems and general machinery applications.

Non-Lock-Out / Spring-Return Type:

• M6

• M8

• M10

Lock-Out / Rest-Position Type:

• M6

• M8

• M10

7. Stainless Steel Indexing Plungers with Plastic Base – Fine Metric Threads

Fine-thread stainless steel and plastic-base configurations for compact and specialized mounting requirements.

Non-Lock-Out / Spring-Return Type:

• M6 × 0.75

• M8 × 1.0

• M10 × 1.0

Lock-Out / Rest-Position Type:

• M6 × 0.75

• M8 × 1.0

• M10 × 1.0

Metric Thread Selection Notes

Standard metric coarse-thread references:

• M6 × 1.0

• M8 × 1.25

• M10 × 1.5

Fine-thread configurations:

• M5 × 0.5

• M6 × 0.75

• M8 × 1.0

• M10 × 1.0

M5 × 0.8 is the standard coarse-thread reference for the miniature M5 configuration.

Actual thread pitch, locating pin diameter, stroke, spring force, installation dimensions and tolerances should be verified against the selected product drawing.

Metric and UNC/UNF threads are not interchangeable.

Engineering Selection Considerations

Operating Mechanism

Non-lock-out indexing plungers automatically return toward their extended position when the knob is released.

Lock-out indexing plungers allow the locating pin to remain retracted when the locking mechanism is engaged.

Body Material

Carbon steel, nickel-plated carbon steel, stainless steel and all-stainless-steel configurations offer different material and surface-finish options.

The exact component materials should be confirmed for each model.

Locating Pin Diameter and Stroke

Engineers should verify the locating pin diameter, mating-hole dimensions and retraction travel to ensure correct mechanical engagement.

Spring Force

Initial and final spring loads influence manual operating force and engagement performance. Values should be confirmed against the selected specification.

Installation Requirements

Thread engagement, mounting space, tightening requirements and equipment vibration should be considered during assembly design.

Industrial Applications

Industrial Automation and Machinery

Indexing plungers provide manually operated positioning functions for adjustable machine components and industrial equipment.

Jigs and Manufacturing Fixtures

Spring-loaded locating pins support repeatable positioning in assembly jigs, inspection fixtures and production tooling.

CNC Machinery and Machine Tools

Indexing plungers can be integrated into auxiliary positioning systems, adjustable fixtures and mechanical accessories.

Automotive and EV Manufacturing Equipment

These components support adjustable tooling, assembly fixtures and mechanical positioning mechanisms used in manufacturing equipment.

Packaging and Food-Processing Equipment

Selected stainless steel configurations may be suitable for adjustable machinery components where corrosion resistance and material compatibility are required.

Electronics and Semiconductor Manufacturing Equipment

Compact indexing plungers can be considered for mechanical fixtures, adjustable assemblies and equipment positioning applications, subject to engineering evaluation.

Benefits for OEM Engineers, Production Managers and Procurement Teams

Mechanical Engineers

• Multiple material and operating configurations

• Standard and fine metric thread options

• Compact and miniature designs

• Drawing-based dimensional evaluation

• Custom engineering options

Production Managers

• Convenient manual positioning

• Repeatable fixture engagement

• Efficient equipment adjustment

• Quick-change tooling support

• Spring-return and lock-out options

Procurement and Supply Chain Teams

• Broad indexing plunger product range

• Standardized product selection

• OEM customization support

• Industrial batch supply

• Material and surface-finish documentation review

OEM Manufacturing and Custom Indexing Plunger Solutions

With more than 20 years of industrial fastener manufacturing experience, Juxin Fasteners supports international OEM customers

 requiring standard indexing plungers and custom-engineered mechanical components.

Our team can evaluate:

• Custom metric mounting threads

• Fine-thread configurations

• Carbon steel and stainless steel material options

• Nickel-plated surface finishes

• Custom locating pin dimensions

• Required pin stroke and spring load

• Plastic knob and plastic-base configurations

• Lock-out and non-lock-out mechanisms

• Drawing-specific dimensional tolerances

• Industrial production quantities

Juxin Fasteners maintains RoHS and REACH compliance documentation. 

Product-specific documentation can be reviewed according to the applicable materials, surface finishes and customer requirements.

Frequently Asked Questions

What is the difference between non-lock-out and lock-out indexing plungers?

Non-lock-out indexing plungers automatically return toward their extended position when the knob is released. 

Lock-out models can hold the locating pin in its retracted position when the locking mechanism is engaged.

What thread sizes are available?

Our indexing plunger range includes M5, M6, M8 and M10 configurations, with standard and selected fine-thread options.

Are stainless steel indexing plungers available?

Yes. The range includes all-stainless-steel models, ultra-miniature stainless steel models and stainless steel configurations with plastic bases.

Do you supply nickel-plated steel indexing plungers?

Yes. Nickel-plated carbon steel indexing plungers are available in M6, M8 and M10 configurations, with spring-return and lock-out types.

Can I order custom indexing plungers?

Yes. Juxin Fasteners supports OEM engineering evaluation based on customer drawings, material specifications, dimensional requirements and order quantities.

Can you provide 2D drawings and 3D models?

Customers can submit their required model and specifications for review of available technical drawings and CAD documentation.

Request a Quotation – Indexing Plungers

Looking for a reliable manufacturer of indexing plungers for industrial machinery, automation equipment, positioning fixtures or OEM manufacturing applications?

Juxin Fasteners offers nickel-plated steel indexing plungers, stainless steel indexing plungers, miniature designs, fine-thread configurations and spring-return or lock-out mechanisms.

For accurate technical evaluation and quotation, please provide:

• Required indexing plunger configuration

• Lock-out or non-lock-out operating type

• Body material and surface finish

• Thread diameter and pitch

• Locating pin diameter and stroke

• Required spring force

• 2D/3D drawings, if available

• Estimated order quantity and annual usage

• Delivery destination

Juxin Fasteners – Precision Fastener Manufacturer

Email: info@juxinfasteners.com

Website: https://www.juxinfasteners.com/

Indexing Plungers | Spring-Loaded Locating Pins | Stainless Steel & Carbon Steel | OEM Custom Manufacturing

Packaging Standard

At Juxin Fasteners, we apply standardized export packaging to ensure product protection, traceability, and compliance with international logistics requirements.

1. Standard Export Packaging

Unless otherwise specified, all products will be packed according to our factory standard export packaging, which includes:

Moisture-resistant inner protection

Poly bag or small box packing as required

Reinforced export cartons

Clear labeling with part number, specification, batch number, and quantity

Palletizing for sea or air shipment when necessary

Our standard packaging is designed to ensure safe transportation, efficient warehousing, and long-distance international shipping.

2. Customized Packaging Options

We also provide customized packaging solutions according to customer requirements, including but not limited to:

Private labeling

Customized barcodes

Specific carton dimensions

Retail packaging

Special pallet configuration

Customer-specific marking and identification

So that you know, customized packaging may involve additional costs and extended lead time depending on the complexity of the requirements.

3. Compliance & Quality Assurance

All packaging processes are controlled under our ISO 9001 quality management system to ensure consistency, traceability, and product integrity throughout the supply chain.