Description
Product Overview
The harayaa Self Locking Positioning Pins plunger is engineered for demanding industrial environments where precision, durability, and ease of use are paramount. Constructed from high‑grade stainless steel, the plunger resists corrosion, wear, and deformation even under continuous cycling, ensuring a long service life that meets the rigorous standards of modern manufacturing facilities. Its M16 thread size aligns with common tooling standards, allowing seamless integration into existing equipment without the need for custom adapters or extensive re‑machining.
At the heart of the design is a finely tuned spring mechanism that delivers consistent force throughout the full range of motion. When the handle is pulled outward and rotated 90 degrees, the internal spring engages, locking the pin securely in place. This action eliminates slippage and provides a tactile feedback that operators can rely on for repeatable positioning. The smooth rotation and low friction surfaces reduce wear on both the plunger and the mating components, extending the lifespan of the entire assembly.
![[Product front view showing all components]](https://www.barwareco.store/wp-content/uploads/2026/08/44fffc0292ef4baa92c3463bdc4dcf57.jpg)
Beyond its mechanical excellence, the plunger incorporates a fine thread that offers precise adjustment capabilities. Users can fine‑tune the extension length in millimeter increments, enabling exact control over positioning tolerances that are critical in high‑precision machining, jig setup, and fixture design. The compact form factor ensures that the plunger can be accommodated in tight spaces, while the robust construction provides confidence that the device will perform reliably under heavy loads and rapid cycling.
Designed with the end‑user in mind, the plunger features an ergonomic handle that is easy to grip, even when wearing gloves. The handle’s shape and surface texture reduce hand fatigue during prolonged use, making it suitable for both occasional adjustments and continuous production line operations. The overall package includes a single unit, ready for immediate deployment, and is backed by a comprehensive warranty that underscores harayaa’s commitment to quality.
Usage
This plunger excels in a variety of applications across the manufacturing spectrum. In CNC machining centers, it serves as a reliable stop limiter, allowing operators to set exact tool travel limits and prevent over‑travel incidents. In assembly lines, the plunger can be used to lock fixtures in place quickly, reducing changeover time and increasing overall throughput. Its corrosion‑resistant stainless steel construction makes it suitable for environments with exposure to coolants, lubricants, or other harsh chemicals, ensuring consistent performance without degradation.
Toolmakers, maintenance technicians, and production engineers will find the plunger particularly valuable when configuring custom jigs or when retrofitting existing equipment to improve repeatability. The intuitive pull‑rotate‑release operation means that even personnel with minimal training can achieve accurate positioning, reducing the learning curve and minimizing the risk of operator error. The plunger’s versatility also extends to research and development labs, where precise control over experimental setups is essential.
Because the plunger is compatible with standard M10, M16, and M20 thread sizes, it can be incorporated into a wide range of existing hardware platforms. This flexibility allows organizations to standardize on a single plunger model while still meeting diverse application requirements, simplifying inventory management and reducing procurement costs.
Why Choose Us
harayaa has a long history of delivering high‑performance tooling solutions that combine engineering expertise with rigorous quality control. The Self Locking Positioning Pins plunger reflects this heritage, offering a product that not only meets but exceeds industry expectations for reliability and precision. Each unit undergoes a multi‑stage inspection process, including dimensional verification, functional testing of the spring lock mechanism, and corrosion resistance assessment, ensuring that every plunger leaving the factory is ready for immediate deployment.
Our commitment to customer satisfaction extends beyond the point of sale. We provide detailed technical documentation, installation guides, and responsive after‑sales support to assist users in maximizing the value of their investment. Should any issues arise, our dedicated service team is equipped to diagnose and resolve problems swiftly, minimizing downtime and preserving production continuity. This comprehensive support framework distinguishes harayaa as a trusted partner rather than just a supplier.
In addition to the robust construction and precise engineering, the plunger is designed with sustainability in mind. The use of recyclable stainless steel and the longevity of the product reduce waste and lower the total cost of ownership over time. By choosing harayaa, customers align themselves with a brand that prioritizes both performance and environmental responsibility.
Key Features
- Premium stainless steel construction delivers exceptional strength and corrosion resistance for long‑term reliability.
- Smooth spring‑loaded mechanism provides a secure 90° lock, ensuring repeatable positioning without slippage.
- Fine M16 thread allows precise adjustment of pin extension, supporting tight tolerance applications.
- Ergonomic handle design reduces hand fatigue and enables easy operation even with gloves.
- Comprehensive after‑sales support and warranty give confidence in product performance and durability.
FAQ
What materials are used in the plunger and how do they affect performance?
The plunger is fabricated from high‑grade stainless steel, which provides excellent tensile strength, resistance to rust, and durability under repeated cycling. This material choice ensures that the plunger maintains its dimensional stability and functional integrity even in harsh industrial environments, reducing the need for frequent replacements.
How does the 90° lock mechanism work and what are its benefits?
When the handle is pulled outward and rotated a quarter turn, an internal spring engages, locking the pin in place. This simple yet effective action creates a firm, vibration‑free hold that prevents accidental movement. The mechanism offers quick engagement and release, allowing operators to adjust positions rapidly while maintaining high positional accuracy.
Can the plunger be used with existing fixtures that have different thread sizes?
Yes. The plunger is available in M10, M16, and M20 thread sizes, making it compatible with a broad range of standard fixtures. Users can select the appropriate size to match their existing hardware, ensuring seamless integration without the need for custom adapters or extensive re‑machining.
What kind of maintenance is required to keep the plunger operating optimally?
Maintenance is minimal. Periodic cleaning with a non‑abrasive solvent to remove debris and lubricating the thread with a light oil will keep the mechanism smooth. Because the plunger is made of stainless steel, it resists corrosion, so routine inspections for wear are typically sufficient to ensure long‑term performance.
Is there technical support available if I encounter issues during installation?
harayaa provides dedicated technical support staffed by experienced engineers. Customers can contact the support team via phone or email for assistance with installation, troubleshooting, or any questions related to the plunger’s operation. Detailed manuals and video tutorials are also available to guide users through the setup process.




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