Standard Compression Springs

Definition: Standard compression springs are those made using standard fractional sizes.

The stock compression springs you will find here are manufactured using the standard sizes taken from the standard drill size chart. These fractional sizes are in sixty-fourths, unless they are converted to a simpler fraction such as thirty-secondths, sixteenths, eighths, quarters, or half. The measurements equivalent to each fractional size are provided in the chart below.

STANDARD FRACTIONAL DRILL SIZE CHART

1/64 = 0.0156	1/32 = 0.0313	3/64 = 0.0469	1/16 = 0.0625
5/64 = 0.0781	3/32 = 0.0938	7/64 = 0.1094	1/8 = 0.1250
9/64 = 0.1406	5/32 = 0.1563	11/64 = 0.1719	3/16 = 0.1875
13/64 = 0.2031	7/32 = 0.2188	15/64 = 0.2344	1/4 = 0.2500
17/64 = 0.2656	9/32 = 0.2813	19/64 = 0.2969	5/16 = 0.3125
21/64 = 0.3281	11/32 = 0.3438	23/64 = 0.3594	3/8 = 0.3750
25/64 = 0.3906	13/32 = 0.4063	27/64 = 0.4219	7/16 = 0.4375
29/64 = 0.4531	15/32 = 0.4688	31/64 = 0.4844	1/2 = 0.5000
33/64 = 0.5156	17/32 = 0.5313	35/64 = 0.5469	9/16 = 0.5625
37/64 = 0.5781	19/32 = 0.5938	39/64 = 0.6094	5/8 = 0.6250
41/64 = 0.6406	21/32 = 0.6563	43/64 = 0.6719	11/16 = 0.6875
45/64 = 0.7031	23/32 = 0.7188	47/64 = 0.7344	3/4 = 0.7500
49/64 = 0.7656	25/32 = 0.7813	51/64 = 0.7969	13/16 = 0.8125
53/64 = 0.8281	27/32 = 0.8438	55/64 = 0.8594	7/8 = 0.8750
57/64 = 0.8906	29/32 = 0.9063	59/64 = 0.9219	15/16 = 0.9375
61/64 = 0.9531	31/32 = 0.9688	63/64 = 0.9844	64/64 = 1.0000

Since there are billions of possibilities, and numerous combinations of your compression spring’s dimensions, having standard sizes is the best solution. Even then, our stock compression spring catalog has over 18,000 standard compression spring designs. So if you need a 1/4” OD by a 7/8” free length, you can definitely find it here!

Using Spring Finder (our search stock springs tool) you can easily navigate and find the spring you need in our standard compression spring catalog >. Spring Finder will find your spring within the measurements you provide.

The basic inputs are: outer diameter, free length, and spring rate. In the basic search you may enter one of those three attributes in either the English or Metric system of measurement.

For a more advanced search, you can add working loads, travel, or other physical dimensions. To do so, you must select “Search More Fields” and enter one or more of the following inputs: travel, load, wire diameter, total coils, inner diameter, and/or solid height. All of the above dimensions and specifications are entered in ranges. This will allow you to set your own tolerances based on your own knowledge of the product it will be used in.

standard compression springs off the shelf

Once you click “Search” you will be redirected to a standard compression spring results page. The results are provided on a table where you’ll see the unit price, our part number, and the spring dimensions.

There are a couple of dropdown menus that will allow you to organize the list of results based on a certain dimension or view more products within the same page. This means you can organize the list by free length, travel, wire diameter, spring rate, etc. The second dropdown will allow you to view 15 to 200 products per page.

find standard compression springs on tablet using search stock springs tool

Choose the spring that best matches your requirements. If you are interested in testing and prototyping, the chart will also help you select other springs which you may want to try.

Compression Spring Finder

Find and buy stock compression springs in two simple steps using Spring Finder. This easy to use search engine makes it easy to find and buy the stock spring you need.

The following simple steps will get you started:

In the basic search, you can enter:

For the advanced search, you must select “Search More Fields”. Here you can enter:

Once you’ve entered your spring’s specifications, click “Search”.

The following are the specifications you can select to organize your search:

Spring Finder Results in Table

Spring Finder Results in Grid View

Extension Spring Finder

Find and buy stock extension springs in two easy steps using Spring Finder. This simple tool makes finding the stock tension spring you need a fast and productive task. Search through over 4,000 designs off the shelf.

The following simple steps will get you started:

In the basic search, you can enter:

To access the parameters in the advanced search, click on “Search More Fields” where the following dimensions will be available:

The fields are not mandatory so you can choose whatever dimension you feel needed and click “Search” once you have done so.

These are the specifications you can organize your extension springs by:

Spring Finder Results in Table

Spring Finder Results in Grid View

Torsion Spring Finder

Find and buy stock torsion springs in two easy steps using Spring Finder. This simple tool makes finding the stock torsion spring you need a fast and productive task. Search through about 1,000 designs off the shelf.

The following simple steps will get you started:

In the basic search, you can enter:

To access the parameters in the advanced search, click on “Search More Fields” where the following dimensions will be available:

The fields are not mandatory so you can choose whatever dimension you want and click “Search” once you have done so.

These are the specifications you can organize your torsion springs by:

Spring Finder Results in Table

Spring Finder Results in Grid View

Conical Spring Finder

Find and buy stock conical springs in two simple steps using Spring Finder. This easy to use search engine makes it easy to find and buy the stock spring you need.

The following simple steps will get you started:

In the basic search, you can enter:

For the advanced search, you must select “Search More Fields”. Here you can enter:

Once you've entered your spring's specifications, click “Search”.

The following are the specifications you can select to organize your search:

Spring Finder Results in Table

Spring Finder Results in Grid View

Standard Compression Springs

Definition: Standard compression springs are those made using standard fractional sizes.

STANDARD FRACTIONAL DRILL SIZE CHART

Choose the spring that best matches your requirements. If you are interested in testing and prototyping, the chart will also help you select other springs which you may want to try.