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.
Zinc-plated springs have mild corrosion resistance.
Springs with closed and ground ends sit flat, so they won’t buckle.
For technical drawings and 3-D models, click on a part number.
Corrosion-Resistant Compression Springs
These springs are more corrosion resistant than standard compression springs. They're also easier to compress than standard 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.
302 stainless steel springs have good corrosion resistance.
Springs with closed and ground ends sit flat, so they won’t buckle.
For technical drawings and 3-D models, click on a part number.
Corrosion-Resistant Precision Compression Springs
Made of stainless steel, these springs are more corrosion resistant than steel compression springs. They’re also easier to compress than steel compression springs. Use where tight OD and spring rate tolerances are required. Closed and ground ends allow the springs to sit flat, so they won’t buckle.
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.
302 stainless steel springs have good corrosion resistance.
316 stainless steel springs have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.
| OD | OD Tolerance | ID | Wire Dia. | Compressed Lg. @ Max. Load | Max. Load, lbs. | Spring Rate, lbs./in.  | Spring Rate Tolerance, lbs./in. | Material | End Type | Pkg. Qty. | Pkg. | |
0.688" Lg. | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.3" | -0.012" to 0.012" | 0.256" | 0.022" | 0.402" | 1.12 | 3.91 | -0.2 to 0.2 | 316 Stainless Steel | Closed and Ground | 3 | 00000000 | 000000 |
| 0.3" | -0.004" to 0.004" | 0.256" | 0.022" | 0.33" | 1.4 | 3.91 | -0.2 to 0.2 | 302 Stainless Steel | Closed and Ground | 3 | 0000000 | 0000 |
Precision Compression Springs
Use these springs where tight OD and spring rate tolerances are required. Closed and ground ends allow the springs to sit flat, so they won’t buckle. All are zinc plated for mild corrosion resistance.
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. 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.
| Lg. | OD | OD Tolerance | ID | Wire Dia. | Compressed Lg. @ Max. Load | Max. Load, lbs. | Spring Rate, lbs./in. | Spring Rate Tolerance, lbs./in. | Material | End Type | Pkg. Qty. | Pkg. | |
| 0.688" | 0.3" | -0.004" to 0.004" | 0.256" | 0.022" | 0.244" | 2 | 4.5 | -0.23 to 0.23 | Zinc-Plated Music-Wire Steel | Closed and Ground | 3 | 0000000 | 00000 |
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 or millimeter of extension.
316 stainless steel springs have excellent corrosion resistance.
For technical drawings and 3-D models, click on a part number.