When shopping for automotive parts, it is important to know what metric and SAE sizes are the same and what isn’t. This can help you determine the right sizes for the job and help you avoid buying parts that won’t fit correctly. In this article, we will take a look at the differences between metric and SAE sizes and provide some helpful information on how you can make sure you get the right size for the job.
Understanding Metric and SAE Sizes
Metric and SAE sizes are two different systems of measurement used in automotive parts, tools, and materials. Metric sizes are based on the metric system of measurements, which is based on the SI (International System of Units) system. Metric sizes are measured in millimeters (mm) and are used to measure length, width, and depth. On the other hand, SAE sizes are based on the U.S. customary system of measurements and are measured in inches (in).
Differences between Metric and SAE Sizes
The main difference between metric and SAE sizes is the unit of measure. Metric sizes are measured in millimeters, while SAE sizes are measured in inches. While both systems are used to measure automotive parts, they are not interchangeable. For example, a metric bolt may not fit in an SAE nut, and vice versa.
Another difference between the two systems is the size increments. Metric sizes are typically measured in increments of 0.5 mm, while SAE sizes are usually measured in increments of 1/16 or 1/32 of an inch. This is why an SAE nut may fit a metric bolt, but not vice versa.
What Metric and SAE Sizes Are The Same?
There are some metric and SAE sizes that are the same. For example, a 10 mm bolt and a 3/8 inch bolt are both the same size. This is because a 10 mm bolt is equal to 3/8 of an inch. Additionally, a 12 mm bolt and a ½ inch bolt are both the same size.
Finding the Right Metric or SAE Size
When shopping for automotive parts, it is important to know what metric and SAE sizes are the same. This will help you determine the correct size for the job and avoid buying the wrong size. You can find the correct metric or SAE size by measuring the part you are replacing or by consulting the vehicle’s owner’s manual.
Converting Metric and SAE Sizes
If you need to convert a metric size to an SAE size or an SAE size to a metric size, there are several tools available to help you. You can use a metric to SAE conversion chart, a conversion calculator, or a conversion app. Each of these tools will provide you with the necessary conversions to make sure you get the right size for the job.