Description
Product Overview
The HARFINGTON ball point spring plunger set is engineered for high‑precision applications where reliable positioning is essential. Crafted from 304 stainless steel, each plunger offers excellent corrosion resistance, heat tolerance, and structural integrity, ensuring a long service life even in demanding environments. The plunger dimensions—12 mm body diameter, 16 mm body length, and an overall length of 19.9 mm—provide a compact profile that fits seamlessly into tight mechanical assemblies.
Precision casting and polishing processes give the plunger a surface roughness of Ra 3.2, reducing friction and wear during repeated cycles. The elastic force rating of 40 N delivers consistent pressure, allowing the plunger to securely latch components without slippage. The no‑step design eliminates positioning gaps, granting users the ability to fine‑tune placement quickly and accurately, which is especially valuable in high‑speed automation settings.
Beyond its mechanical advantages, the plunger’s stainless‑steel composition ensures that it will not rust or degrade when exposed to moisture or chemicals commonly found in industrial workshops. This makes the HARFINGTON plunger a dependable choice for both indoor and outdoor applications, ranging from furniture hardware to heavy‑duty tooling fixtures.
Each package includes six identical plungers, providing a cost‑effective solution for projects that require multiple points of contact or replacement parts. The set is ready for immediate installation, with no additional components needed, simplifying inventory management for manufacturers and repair technicians alike.
Usage
These spring plungers excel in a variety of settings. In furniture manufacturing, they serve as discreet latch mechanisms for cabinet doors and drawer fronts, delivering a smooth, silent closing action that enhances the user experience. Their compact size allows them to be concealed within thin panel edges, preserving the aesthetic integrity of the piece.
In the realm of mechanical tooling, the plungers act as precise positioning aids for jigs, fixtures, and workholding devices. The 40 N spring force ensures that workpieces remain firmly seated during machining operations, reducing vibration and improving dimensional accuracy. This reliability is critical for CNC machining centers, where repeatability directly impacts product quality.
Automation engineers also benefit from the plunger’s quick‑release capability. The step‑free design enables rapid adjustments of robotic end‑effectors or conveyor‑mounted components, minimizing downtime during changeovers. Because the plungers are made from stainless steel, they can withstand the lubricants and cleaning agents typical in automated production lines without compromising performance.
Why Choose Us
HARFINGTON is a recognized brand in the hand‑tool and hardware industry, known for delivering products that combine rigorous engineering standards with practical usability. Our spring plungers undergo a multi‑stage quality control process, including dimensional verification, spring force testing, and corrosion resistance assessment, guaranteeing that each unit meets exacting specifications.
We stand behind the durability of our components with a comprehensive warranty that covers material defects and premature wear under normal operating conditions. Our dedicated technical support team is available to assist customers with installation guidance, troubleshooting, and customization advice, ensuring that you get the most out of every plunger you purchase.
Choosing HARFINGTON means investing in a product that not only performs reliably but also contributes to the overall efficiency of your manufacturing or repair processes. The combination of high‑grade materials, precise engineering, and responsive customer service makes our spring plungers a preferred solution for professionals seeking dependable positioning hardware.
Key Features
- Durable 304 stainless steel construction resists rust and corrosion for long‑term reliability.
- No‑step design provides seamless, precise positioning without gaps, speeding up adjustments.
- Consistent 40 N spring force ensures strong, reliable latch action across multiple cycles.
- Compact 12 mm diameter and 16 mm length fit into tight spaces, ideal for furniture and tooling.
- Backed by HARFINGTON’s warranty and dedicated technical support for peace of mind.
FAQ
What material are the plungers made from?
The plungers are fabricated from 304 stainless steel, which offers excellent corrosion resistance, heat tolerance, and strength, making them suitable for a wide range of industrial and domestic applications.
Can these plungers be used in high‑temperature environments?
Yes. The 304 stainless steel material maintains its mechanical properties at elevated temperatures, allowing the plungers to function reliably in environments where heat exposure is common, such as metalworking shops or automotive assembly lines.
How do I install the plungers?
Installation is straightforward: press the plunger into the designated hole until it seats fully. The step‑free design ensures the plunger aligns automatically, requiring no additional tools or adjustments.
What is the recommended maintenance schedule?
Periodically inspect the plungers for signs of wear or debris buildup. Clean with a mild solvent if necessary, and verify the spring force remains within specifications. Regular checks help maintain optimal performance.
Are replacement parts available?
Yes. HARFINGTON offers individual replacement plungers that match the exact specifications of the original set, ensuring seamless integration into existing assemblies without the need for redesign.




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