What Size File Do You Need for a 3/8 Chain?

If you’re wondering what size file you need for a 3/8 chain, you’ve come to the right place. In this article, we’ll walk you through the process of choosing the right file size for your chain.

By following these simple tips, you’ll be sure to get the perfect fit for your needs.

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There are two types of 3/8 chain saws: those with 60 drive links and those with 72 drive links. The type of file you need depends on the number of drive links on your saw chain. If you have a 60-drive-link chain, you need a file that is 5/32 of an inch in diameter. If you have a 72-drive-link chain, you need a file that is 3/16 of an inch in diameter.

What is a 3/8 chain?

A 3/8 chain is a standard saw chain used on most small chainsaws. The size is determined by the width of the drive link, which is the metal part of the chain that fits into the groove on the saw’s guide bar. A 3/8 chain typically has 60 drive links.

What is the file size for a 3/8 chain?

3/8″ refers to the width of the bore, or interior diameter, of the saw chain. This size is common on smaller saws like pole pruners, trimmers and some brushcutters. The most common file size used on 3/8″ chain is 4.0 mm, but check your saw’s user manual to be sure.

How to determine the file size for a 3/8 chain?

The file size you need for a 3/8 chain will depend on the manufacturer and the specific type of chain. Some chains are designed to be used with a certain size file, while others may be compatible with multiple sizes. In general, however, you will need a #4 or #5 file for a 3/8 chain.


If you are planning to use a 3/8 chain on your saw, then you will need to get a file that is designed for that size. There are many different styles and sizes of files available, so you should be able to find one that will work well for you. Be sure to read the instructions on the package before you purchase the file so that you know how to properly use it.