Description
Product Overview
The Bitray Spring Plunger is engineered from high‑grade stainless steel, delivering exceptional corrosion resistance and long‑term durability in demanding industrial environments. Its core design incorporates a pull‑ring hand‑retractable mechanism that enables users to adjust pretension force with a simple 360° rotation, ensuring precise positioning and repeatable performance. The M12‑1.75‑8 thread size provides a balanced combination of strength and compactness, making it suitable for a wide range of applications, from precision molds to heavy‑duty automotive assemblies. The plunger’s ball‑nose tip offers smooth engagement with mating components, reducing wear and extending service life. With a package dimension of 5.12 × 3.54 × 0.75 inches and a lightweight of 5.29 oz, the product is easy to store and transport.
![[Product front view showing all components]](https://www.timelessbuy.store/wp-content/uploads/2026/08/4425c303256a42fd8db8719fc5b84d74.jpg)
Usage
Designed for versatility, this hand‑retractable spring plunger excels in environments where frequent locking and unlocking are required. It is commonly employed in injection molding setups, CNC machine fixtures, chassis assembly lines, and automotive part processing where rapid tool changes are essential. The pull‑ring design allows technicians to engage or release the plunger without the need for additional tools, improving workflow efficiency and reducing downtime. Its compact form factor makes it ideal for tight spaces, and the stainless‑steel construction ensures reliable operation even under high‑temperature or corrosive conditions. Whether you are a machinist, a maintenance engineer, or a hobbyist working on custom projects, the Bitray spring plunger delivers consistent performance.
Why Choose Us
Bitray stands for precision engineering and quality assurance. Each spring plunger undergoes rigorous testing to verify load capacity, cycle durability, and dimensional accuracy, meeting industry standards for metalworking tools. Our commitment to material excellence means the plunger resists rust, deformation, and fatigue, providing a longer service interval compared to standard carbon‑steel alternatives. Additionally, Bitray offers responsive customer support and a straightforward warranty policy, ensuring that any concerns are addressed promptly. By choosing Bitray, you benefit from a product that combines robust construction, thoughtful design, and reliable after‑sales service.
Key Features
- Stainless‑steel construction guarantees corrosion resistance and long‑term durability.
- Pull‑ring hand‑retractable design enables quick, tool‑free adjustment of pretension force.
- M12‑1.75‑8 thread size offers a perfect balance of strength and compactness for diverse applications.
- Ball‑nose tip provides smooth engagement, reducing wear on mating components.
- Bitray’s dedicated support team ensures fast assistance and a hassle‑free warranty experience.
FAQ
What materials can the spring plunger be used with?
The plunger is compatible with most metal and composite materials commonly found in molds, fixtures, and automotive parts, including aluminum, steel, and high‑temperature polymers.
How do I adjust the pretension force?
Simply rotate the pull‑ring 360°; each turn incrementally changes the internal spring tension, allowing you to set the exact force needed for your application.
Is the plunger suitable for high‑temperature environments?
Yes, the stainless‑steel body maintains its mechanical properties up to 400 °C, making it reliable for hot‑press and heat‑treatment processes.
Can I replace the plunger if it wears out?
Absolutely. The plunger is designed for easy removal and replacement using the same pull‑ring mechanism, ensuring minimal downtime.
What is the warranty period for this product?
Bitray provides a one‑year limited warranty covering manufacturing defects and material failures, backed by responsive customer service.






Reviews
There are no reviews yet.