HARFINGTON Ball Point Spring Plunger 3x4mm 5N Stainless Steel for

Description

Product Overview

The HARFINGTON ball point spring plunger is engineered for high‑precision positioning in a variety of mechanical and furniture applications. Each plunger measures 3mm in diameter and 4mm in length, with an overall length of 4.8mm, delivering a consistent 5N of elastic force. Crafted from premium stainless steel, the plunger provides excellent corrosion resistance, heat tolerance, and long‑term durability, ensuring reliable performance even in demanding environments. The surface finish of Ra 3.2 guarantees smooth operation and minimal wear, while the precision‑cast design offers a tight tolerance of ±0.03mm, allowing for exact fit and repeatable results. The set includes ten pieces, each ready to be installed with a simple press‑in mechanism, eliminating the need for additional tools or complex assembly steps.

Designed with a compact footprint, the plunger integrates seamlessly into door hinges, cupboard latches, drawer slides, and other mechanical devices where space is at a premium. Its elastic range of 5N provides enough force to secure components without causing excessive strain, making it ideal for both lightweight and medium‑load applications. The stainless‑steel construction not only resists rust but also maintains structural integrity under repeated cycles of compression and release, delivering consistent performance over the product’s lifespan.

Usage

These spring pluggers are versatile components suitable for a broad spectrum of uses. In residential settings, they are commonly employed to secure cabinet doors, wardrobe panels, and drawer fronts, providing a discreet yet effective latch mechanism that keeps doors closed while allowing easy opening. In industrial environments, the plunger’s precise positioning capability makes it valuable for aligning moving parts in automation machinery, workholding devices, and custom fixtures where exact placement is critical.

Installation is straightforward: simply align the plunger’s ball tip with the corresponding socket or hole, and press until it seats firmly. The built‑in elasticity ensures a snug fit that resists vibration and accidental disengagement. Regular inspection is recommended to verify that the plunger remains seated and that the elastic force has not diminished, especially in high‑cycle applications. When used in furniture assemblies, the plunger contributes to a clean aesthetic by eliminating visible hardware while delivering reliable locking action.

Why Choose Us

Choosing HARFINGTON means selecting a brand committed to quality, precision, and customer satisfaction. Our spring plunger set undergoes rigorous testing to meet industry standards for elasticity, material strength, and dimensional accuracy. Each unit is inspected for surface finish and tolerance compliance, guaranteeing that you receive a product that performs as advertised.

We stand behind our products with responsive after‑sales support. Should you encounter any issues during installation or operation, our technical team is ready to provide guidance, replacement parts, or troubleshooting assistance. Our commitment to continuous improvement drives us to refine designs based on user feedback, ensuring that each new batch of pluggers offers enhanced performance and reliability.

In addition to the superior material and engineering, HARFINGTON offers competitive pricing without compromising on quality. The 10‑piece set provides excellent value for professionals, hobbyists, and DIY enthusiasts alike, making it a cost‑effective solution for a wide range of projects.

Key Features

• High‑grade stainless steel construction resists rust and corrosion for long‑term durability.
• Consistent 5N elasticity ensures reliable locking and smooth release in various applications.
• Compact 3x4mm size fits into tight spaces, ideal for furniture and precision machinery.
• Easy press‑in installation eliminates the need for tools, saving time and effort.
• Dedicated customer support and warranty provide peace of mind and after‑sales assistance.

FAQ

What size plunger should I choose for my application?

Our 3x4mm plunger is designed for standard small‑to‑medium openings. Measure the socket or hole depth and diameter, then select the plunger that matches the body diameter (3mm) and provides the required elasticity (5N) for your load.

Can the plunger be used in high‑temperature environments?

Yes. The stainless‑steel material is heat‑resistant and can operate safely in temperatures up to 200 °C (392 °F) without losing its elastic properties.

How often should I inspect the plunger for wear?

For high‑cycle applications, inspect the plunger every 6‑12 months. Look for signs of deformation, loss of elasticity, or corrosion. Replace any plunger that no longer provides the original 5N force.

Is the set compatible with other brands’ hardware?

The plunger’s standard ball‑nose design is compatible with most generic sockets and fixtures that accept a 3mm diameter ball. Verify the socket dimensions before purchase to ensure a proper fit.

What is the return policy if the plunger does not meet my expectations?

We offer a 30‑day return window for unused items. If the plunger is defective or does not match the described specifications, contact our support team for a replacement or refund.