Compression Springs SINEKY 304 Stainless Steel Spring Size 0.4x5x15mm

Description

Product Overview

Our 150‑piece compression spring set is engineered for precision and durability. Each spring is forged from 304 stainless steel, a material renowned for its superior corrosion resistance, high elasticity, and long service life. The springs are available in a range of wire diameters—from 0.3 mm to 0.5 mm—and free lengths spanning 10 mm to 30 mm, providing flexibility for a multitude of applications. The outer diameters of 4 mm, 5 mm, and 6 mm ensure compatibility with standard pen housings, miniature gear assemblies, and other compact mechanisms. The springs are supplied in a compact, lightweight package measuring 1.18 × 0.79 × 0.39 inches, making storage and handling effortless.

Every spring undergoes a rigorous quality‑control process that includes dimensional verification, tensile testing, and surface finish inspection. This guarantees that each unit meets exacting industry standards and performs consistently under repeated compression cycles. The 304 stainless steel composition also offers excellent temperature tolerance, allowing the springs to operate reliably in environments ranging from sub‑zero conditions to elevated temperatures without loss of elasticity.

Designed with both professionals and hobbyists in mind, the springs are reusable and maintain their spring rate over thousands of cycles. Whether you are assembling a custom pen, repairing a small motor, or prototyping a new device, these springs provide the reliable force needed to return components to their original positions. The set includes a variety of sizes, enabling you to select the optimal spring for each specific load requirement, reducing the need for multiple orders and simplifying inventory management.

Usage

These compression springs excel in a broad spectrum of applications. In the writing instrument industry, they serve as the core mechanism that provides the tactile feedback and ink flow control essential for smooth operation. Their compact dimensions make them ideal for fountain pens, rollerball pens, and mechanical pencils where space is at a premium. Beyond pens, the springs are perfect for miniature mechanical devices such as micro‑actuators, small valves, and precision gearboxes used in robotics and hobbyist projects.

For DIY enthusiasts, the springs are a versatile component for building prototypes, repairing broken mechanisms, or creating custom tension systems. Their high elasticity allows them to be used in tension‑loaded projects like small launchers, tension‑adjustable mounts, and even as part of simple shock‑absorption systems. The corrosion‑resistant nature of 304 stainless steel ensures that the springs remain functional even in humid or outdoor environments, extending the lifespan of your creations.

Why Choose Us

Choosing our compression spring set means selecting a product backed by a commitment to quality and customer satisfaction. We source premium 304 stainless steel from reputable suppliers and employ precision manufacturing techniques that minimize material waste while maximizing performance. Each batch is inspected for dimensional accuracy, ensuring that the springs fit seamlessly into your designs without the need for additional machining.

Our after‑sales support includes technical assistance, detailed product documentation, and a responsive customer service team ready to address any concerns. We understand that reliable components are critical to the success of your projects, and we stand behind our springs with a satisfaction guarantee. When you purchase from us, you receive not only a high‑quality product but also a partnership that supports your engineering and creative endeavors.

Key Features

• Premium 304 stainless steel construction delivers exceptional corrosion resistance and long‑term durability.
• Wide range of wire diameters and lengths provides flexibility for diverse mechanical and DIY applications.
• Compact dimensions fit easily into small devices such as pens, miniature gearboxes, and micro‑actuators.
• Reusable design maintains consistent spring force over thousands of compression cycles.
• Responsive customer support and technical assistance ensure a smooth purchasing experience.

FAQ

What is the load capacity of these springs?

The load capacity varies depending on the specific size and wire diameter. For example, a 0.3 mm wire diameter spring with a 10 mm free length typically supports a load of up to 0.2 N, while a 0.5 mm wire diameter spring with a 30 mm free length can handle loads up to 1.5 N. Detailed load charts are available upon request to help you select the appropriate spring for your application.

Can these springs be used in high‑temperature environments?

Yes. The 304 stainless steel material retains its elasticity and structural integrity at temperatures ranging from -40 °C to 200 °C. This makes the springs suitable for applications that involve exposure to heat, such as certain automotive components or industrial equipment.

Are the springs compatible with standard pen cartridges?

Absolutely. The outer diameters of 4 mm, 5 mm, and 6 mm are designed to match the most common pen cartridge sizes on the market. This ensures a snug fit and reliable performance without the need for additional adapters or modifications.

What is the packaging like for bulk orders?

For bulk orders, we can provide customized packaging solutions, including larger boxes, protective inserts, and labeling that meets your branding requirements. Our standard packaging includes a compact, lightweight box that protects the springs during transit while keeping shipping costs low.

How do I contact customer support for technical questions?

You can reach our technical support team via email at [email protected] or by calling our toll‑free line at 1‑800‑555‑1234. Our representatives are available Monday through Friday, 9 am–5 pm EST, and are ready to assist with any product‑related inquiries.