What Is M20 Cable Gland Size？

In the electrical world, cable glands are essential for storing cables securely and managing their installation properly. Many manufacturers and users of cable glands frequently ask the same question;What size is the M20 Cable Gland?In this article, we will first discuss the M20 cable gland size and then go into greater detail about how cable glands are used, types of cable glands, and how to determine the size of cable glands.

What Does an M20 Cable Gland Size Mean?

M20 indicates the Metric Thread Size of the cable gland; A cable gland with an M20 designation has a diameter of 20 millimetres (20 mm) in thread diameter. The Metric M20 size indicates the compatibility of the Cable Gland with different types of cables and conduit systems and therefore can also specify what application the cables can be used in. M20 Cable Glands are typically applied to small-to-medium size cables within various industries including (but not limited to) electrical engineering, telecommunications, and automation.

Technological M20 Cable Gland Specifications

• Thread Diameter: 20mm (metric thread)
• Cable Range: Usually accommodates 6mm - 12mm diameter cables, however varies depending on gland variants.
• Material: Various materials are available depending on where the product will be installed (outdoor, in damp environments, etc.). Options include nylon, brass, stainless steel or plastic.
• Ingress Protection (IP Rating): IP68 rated products are waterproof and dustproof. There are other IP rated products available.
• Applications: Widely used for installations inside electrical panels, junction boxes, enclosures and machines.

Steps To Selecting Proper Size Of Cable Gland For Your Application

To properly select an M20 Cable Gland requires more than just the size of thecable gland. The following factors should be taken into consideration when selecting the appropriate size of cable gland for an application:

• Diameter Of Cable: Measure the diameter of your cable you will use. When it comes to the fit of the cable gland, make sure that the cable is secure and will not damage the cable.
• Thread Compatibility: Ensure that the threads of the cable gland match the threads of the enclosure or hole used for the installation.
• Environment: Environmental conditions should be evaluated when determining if the gland needs additional protection from factors such as water, extreme heat, and corrosion.
• Material Selection: Materials for cable glands will vary based on the environment: nylon or plastic for standard (indoor) locations; brass or stainless steel in situations where high heat or industrial use is expected.

Other Cable Gland Sizes and Their Applications

Cable glands, in addition to being M20, are offered in several other sizes (M16, M25, M32, etc.) for use based on the cable size and type of installation required:

• M16 Cable Glands: Ideal for smaller cables with diameters ranging from 4mm to 8mm.
• M25 Cable Glands: Designed for larger cables, typically supporting diameters of 9mm to 16mm.
• M32 Cable Glands: Used in industrial applications requiring cable diameters from 15mm to 21mm.

Understanding the sizing requirements will help you select the most appropriate size for your own needs.

Commonly Asked Questions

What size is an M20/G20 Cable Gland?

The M20 (20 mm metric thread) cable gland will allow you to secure and protect a cable with an outside diameter between 6 mm and 12 mm.

What does a Cable Gland do?

Cable glands provide clamping, sealing and protecting cables in an electrical system from moisture, dust and debris entering an enclosure while providing strain relief for the cables.

What are Cable Glands made from?

Cable Glands can be made using many different materials like: nylon, plastic, brass, aluminum and stainless steel depending on the use of the cable gland or the environment.

Can I get a Waterproof/M20 Cable Gland?

Many M20 and other cable glands are manufactured to meet high ingress protection ratings such as IP 68 which provides waterproof and dustproof solutions for outside industrial use.

The size of the M20 cable gland is a 20mm metric thread size that will secure and protect the cable in the diameter range of 6 mm to 12 mm. Knowing the specifications and materials and IP rating for a cabling system will allow for the best selection of cable glands in the future. As you review the various sizes of cable glands beyond M20, you will have more options for your electrical panels, heavy duty equipment and outdoor usage. The appropriate use of cable glands will provide the cable with appropriate protection and organization for extended periods of time. Explore the many sizes and material options to find the perfect combination for your application.