Diagonal Pliers

Diagonal Pliers

Diagonal pliers, also known as side cutters, are a common hand tool widely used in electrical work, electronics repair, jewelry making, and various crafts. They feature a diagonal cutting edge on the jaws, making them ideal for cutting and handling various wires, metal strands, and other materials.

Design and Structure

The design and structure of diagonal pliers are aimed at providing efficient and convenient cutting operations. They consist of the following parts:

  • Jaws:
    • Shape and Size: The jaws of diagonal pliers are designed with a diagonal cutting edge, allowing easy cutting of wires and other materials. Different diagonal designs are suited for various cutting needs.
    • Material: Typically made from high-carbon steel, stainless steel, or tungsten steel to ensure durability and strength. Some high-end models have heat-treated or coated jaws for increased hardness and rust resistance.
  • Handles:
    • Material and Design: Handles are often covered with plastic, rubber, or composite materials to provide a comfortable grip and prevent slipping. Some handles feature ergonomic designs to reduce fatigue during prolonged use.
    • Insulation: For electrical work, diagonal pliers often come with insulated handles that can withstand certain voltages, ensuring user safety.
  • Hinge and Spring:
    • Hinge Design: The hinge connects the jaws and handles, allowing smooth opening and closing. A well-designed hinge ensures seamless operation and strong cutting force.
    • Spring Mechanism: Some diagonal pliers are equipped with a built-in spring that automatically opens the jaws after use, enhancing operational efficiency.


The wide application of diagonal pliers is attributed to their unique design and versatility. Here are some main application scenarios:

  • Electronics Repair: In electronics repair, diagonal pliers are used to cut small electronic component leads, strip wires, and handle conductors. Their precise diagonal cutting edge allows for accurate cuts without damaging other components.
  • Jewelry Making and Repair: Jewelers use diagonal pliers to cut metal wires, shape, and trim jewelry parts. The precision and cutting power of diagonal pliers are essential for creating fine jewelry.
  • Crafting: In various crafting activities such as model making and weaving, diagonal pliers handle small parts and perform detailed operations, helping craft enthusiasts complete intricate work.
  • Electrical Work: Electricians use diagonal pliers for wire cutting, stripping, and handling small parts during wiring, connection, and circuit repair. The insulated handles ensure safety during electrical operations.

Usage Tips

To maximize the functionality of diagonal pliers, here are some usage tips and precautions:

  • Proper Grip: Hold the pliers with a natural and comfortable grip, avoiding excessive force to prevent hand fatigue.
  • Precise Operation: When cutting small parts, control the force applied to avoid cutting too much or damaging the parts.
  • Regular Maintenance: Keep the pliers clean and dry, and regularly lubricate the hinge to ensure smooth operation.
  • Appropriate Selection: Choose the right size and type of diagonal pliers based on specific tasks to avoid inconvenience and risk.

Maintenance and Care

Proper maintenance and care are necessary to extend the life of diagonal pliers:

  • Cleaning: After each use, remove dirt and residue from the jaws to prevent rust.
  • Lubrication: Regularly apply lubricant to the hinge to maintain flexibility and smoothness.
  • Storage: Store diagonal pliers in a dry, ventilated place to avoid moisture and corrosion. Using a toolbox or rack for storage can prevent collisions and wear.

Selection Guide

When choosing diagonal pliers, consider the following aspects:

  • Material: High-quality materials such as high-carbon steel and stainless steel ensure durability and reliability.
  • Brand: Choose reputable brands to ensure tool quality and after-sales service.
  • Functionality: Select diagonal pliers with specific features like insulation or fine tips based on your needs.
  • Size: Different sizes of diagonal pliers are suitable for different tasks, so choose the appropriate size based on the work requirements.


As a versatile hand tool, diagonal pliers are indispensable in fields such as electrical work, electronics repair, jewelry making, and more, thanks to their unique design and diverse applications. Proper use and maintenance not only enhance work efficiency but also extend the tool's lifespan. Selecting the right diagonal pliers will bring great convenience and assurance to your work.

Diagonal Pliers main content: