System of Measurement System of Measurement |
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Length Length | Show |
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Length Length | Hide |
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Spring Type Spring Type |
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Compression |
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Extension |
ID ID |
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Material Material |
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Spring Rate Spring Rate |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Maximum Spring Rate Tolerance Maximum SpringRate Tolerance |
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Minimum Spring Rate Tolerance Minimum SpringRate Tolerance |
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Compression Springs

As you squeeze a compression spring, it pushes back to return to its original length. Spring rate is the amount of force required for every inch of compression or, for metric springs, millimeter of compression. The higher the spring rate, the harder it is to compress the spring.
For technical drawings and 3-D models, click on a part number.
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OD | ID | Dia. | Compressed Lg. @ Max. Load | Max. Load, lbs. | Spring Rate, lbs./in. | Material | End Type | Pkg. Qty. | Pkg. | |
0.31" Lg. | ||||||||||
0.18" | 0.152" | 0.014" | 0.14" | 0.84 | 4.9 | Music-Wire Steel | Closed | 6 | 00000000 | 000000 |
Extension Springs with Hook Ends

As you stretch an extension spring, it gets harder to pull. Minimum load is the amount of force required to start to extend the spring. Maximum load is the amount of force required to fully extend the spring. Spring rate is the amount of force required for every inch or mm of extension.
For technical drawings and 3-D models, click on a part number.
Corrosion-Resistant Extension Springs with Hook Ends

Made of stainless steel, these springs are more corrosion resistant than steel springs. They're also easier to extend than steel springs. As you stretch an extension spring, it gets harder to pull. Minimum load is the amount of force required to start to extend the spring. Maximum load is the amount of force required to fully extend the spring. Spring rate is the amount of force required for every inch of extension or, for metric springs, millimeter of compression.
302 stainless steel springs have good corrosion resistance.
For technical drawings and 3-D models, click on a part number.