How to know spanner size?

The size of a spanner is determined by the diameter of the bolt or nut that it is used to turn. The most common sizes are 8, 10, 12, 14 and 17mm. To determine the size of spanner you need, simply measure the diameter of the bolt or nut across the flats using a caliper or ruler.

There is no definitive answer to this question since the size of a spanner (or wrench) is dependent on the application. However, a few general tips on how to determine spanner size include:

– Checking the manufacturer’s specifications for the required size

– Consulting a spanner/wrench size chart
– Comparing the spanner to a known object of similar size

How do I know what size nut spanner I need?

As you can see, it is best to know the thread type of the nut and then choose the spanner size that will then give the best fit. Once you know the thread type and size of the nut, then it is simple to look up the correct spanner size.

A metric spanner is a type of wrench that is used to turn fasteners, such as nuts and bolts. They come in a variety of sizes, and the size you need will depend on the size of the fastener you are trying to turn. Here is a chart of some common metric spanner sizes and their corresponding wrench sizes:

What size is 3/4 spanner

The following table provides a quick reference for converting between standard SAE US wrench and spanner sizes and metric mm sizes. To find the metric mm size for a given standard SAE size, simply find the size in the left column and look across to the right column. To find the standard SAE size for a given metric mm size, do the reverse.

What is the standard wrench size?

Standard (SAE) Wrench Size Chart & Sizes in mmStandard (SAE)Wrench SizeStandard (SAE)Wrench Size1/4″5/16″11/32″3/8″13/32″7/16″15/32″1/2″17/32″9 more rows

What does mm stand for on a wrench?

millimeterA millimeter is a metric unit of measurement for length. A millimeter is one thousandth of a meter. A millimeter is equal to 0.03937 inches. A millimeter is also equal to 0.001 centimeters.

What size is a 6 mm wrench?

Wrench Size Conversion TableSizeInchesMillimetersStandardMetric3/8″9.5 mm7/16″11 mm1/2″13 mm19 more rows

Is a 14mm wrench the same as a 9 16?

There is no direct conversion between metric and SAE wrench sizes, but the chart below shows how metric sizes compare to the closest SAE equivalent….Conversion Chart.SAEMetric3/8″9.5 mm7/16

What size spanner is M10?

Spanner sizes are a way of denoting the size of a spanner (wrench) in terms of the nominal size of the bolt or nut that it is designed to fit.

For example, a “M7” spanner is designed to fit a bolt or nut with a nominal size of 7mm.

The table below lists the most common spanner sizes and their corresponding nominal sizes:

Nominal Size Spanner Size
M7 11mm
M8 13mm
M10 17mm
M12 19mm

As you can see, the spanner size is always slightly larger than the nominal size to allow for a tight fit.

M6 fasteners usually require a 10mm spanner, M8 a 13mm spanner, M10 a 17mm spanner, and M12 a 19mm spanner.

What are the 4 basic types of spanners?

There are many types of spanners available in the market, each serving a different purpose. Open end spanners are the most common type and are used to hold bolts and nuts in place. Double end spanners have both ends opened and are used to hold larger objects such as pipes. Ring spanners are socket spanners with a ring attached to the end, which helps to prevent the socket from slipping off. Box spanners are a combination of both open and ring spanners and are used to hold larger objects. Hook spanners are used to hold objects in place while adjustable spanners can be used to adjust the size of the opening.

There are many types of wrenches, but the most common is the adjustable wrench. An adjustable wrench is a wrench that can be adjusted to fit a variety of different sizes of nuts and bolts. This type of wrench is very versatile and can be used for a variety of different tasks.

What is the most common spanner

The open-ended spanner is probably the most common type of spanner. It is available in versions for hexagonal and square headed fasteners. The jaws of a spanner are angled at about 15° on most models, and the handle, or shaft, is slim or flat.

There is not a whole lot of difference between 18mm and 19mm, with the latter being only slightly larger than the former. However, this slight increase in size can make a big difference when working with wood or other materials. When choosing between the two, it is important to take into account the project you are working on and the materials you will be using.

How do you size a spanner wrench?

Spanner wrenches come in different sizes, so it’s important to know which size you need before purchasing one. To determine the size of spanner wrench you need, measure the length from the end of the handle to the edge of the fixed side of the vise. Some spanner wrenches have the size printed on the handle, which can be helpful in determining the right size to purchase.

The size of the bolt head and the wrench size are important to know when working with US bolts. The table below shows the bolt diameter, head size, and wrench size for hex bolts, lag bolts, and square bolts.

What is 3 4 socket in metric

Which is better metric or imperial tools?

Metric tools and imperial tools both have their place in the world. On the whole, metric tools are more precise, and they are often easier to work with. However, some people prefer to stick with imperial tools, as they find these more familiar.

Is a 1/2 or 3/8 impact better?
for what it’s worth, most mechanics will tell you that a ½” impact is a better choice for work on trucks and SUVs. The ½” impact offers more power than a 3/8” impact and is better-suited for loosening stubborn fasteners and driving large, stubborn screws.

What is the difference between 9/16 and 5/8 sockets?
The difference between a 9/16 and 5/8 socket is that a 9/16 is fractionally larger than a 5/8 socket. A 9/16 socket is used for a variety of applications, including to drive large fasteners and to loosen or tighten stubborn ones. A 5/8 socket may also be used for these purposes, but it is not as well-suited.

Ajay 1/2 Inch Drive Hex & Bi-Hex Socket Spanner, Size: 28 mm (Pack of 10) is a premium quality product from Ajay. It is made of high quality material and is durable. It is easy to use and is perfect for use in home and automotive applications.

Which is bigger M6 or M10?

Metric screws and bolts are specified by diameter, pitch and length, in millimeters. The table below shows the closest inch equivalents for metric screws and bolts. Larger screws and bolts are denoted with “(Larger)” next to their metric size, while smaller screws and bolts are denoted with “(Smaller)” next to their metric size.

If the size is M10 x 25, that would mean that the diameter is 10 mm. Since there is no thread pitch listed, the fastener is assumed to have a coarse thread.


There is no definitive answer to this question, as the size of a spanner (or wrench) will depend on the specific application it is being used for. However, a few general tips on choosing the right size spanner can include checking the manufacturer’s specifications for the product you are working on, and/or measuring the nuts or bolt heads you need to loosen/tighten to get an approximate idea of the size required. Sometimes, trial and error may be the only way to determine which size spanner is needed for a particular job.

After reading this article, you should now know how to determine the appropriate spanner size for your needs. Armed with this knowledge, you can be sure to select the right spanner size for the job, whether you’re doing repairs around the house or working on a professional project.

Joe owns a small tool workshop in Utah. He inherited passion for construction from his father and aims to help others writing educational articles in his spare time. Every man should know how to fix basic things around the house!

Leave a Comment