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.
316 stainless steel springs have excellent corrosion resistance.
Springs with closed and ground ends sit flat, so they won’t buckle.
| OD, mm | ID, mm | Wire Dia., mm | Compressed Lg. @ Max. Load, mm | Max. Load , lbs. | Spring Rate, lbs./mm  | Material | End Type | Specifications Met | Pkg. Qty. | Pkg. | |
25 mm Lg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2.5 | 1.9 | 0.3 | 15.113 | 0.5 | 0.05 | Passivated 316 Stainless Steel | Closed | __ | 1 | 00000000 | 00000 |
| 3 | 1.98 | 0.51 | 18.694 | 2 | 0.32 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 3 | 2.28 | 0.36 | 16.459 | 0.7 | 0.08 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 3 | 2.4 | 0.3 | 13.335 | 0.4 | 0.03 | Passivated 316 Stainless Steel | Closed | __ | 1 | 00000000 | 0000 |
| 3.71 | 2.49 | 0.61 | 17.755 | 2.8 | 0.38 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 4.6 | 2.98 | 0.81 | 19.406 | 5.2 | 0.94 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 4.6 | 3.38 | 0.61 | 16.815 | 2.3 | 0.28 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 4.6 | 3.48 | 0.56 | 15.926 | 1.8 | 0.19 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 4.6 | 3.68 | 0.46 | 15.316 | 1 | 0.1 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 4.6 | 3.88 | 0.36 | 13.868 | 0.4 | 0.04 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 5.99 | 4.37 | 0.81 | 17.374 | 4.1 | 0.54 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 5.99 | 4.77 | 0.61 | 13.36 | 1.8 | 0.15 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 5.99 | 4.97 | 0.51 | 12.243 | 1 | 0.08 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 7.49 | 5.61 | 0.97 | 17.297 | 5.5 | 0.66 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 7.49 | 5.87 | 0.81 | 15.545 | 3.3 | 0.35 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 0000000 | 0000 |
| 7.49 | 6.17 | 0.66 | 14.503 | 1.8 | 0.17 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 7.49 | 6.37 | 0.56 | 13.208 | 1.1 | 0.09 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 7.55 | 5.05 | 1.25 | 13.8 | 24.98 | 2.2 | 302 Stainless Steel | Closed and Ground | DIN 2095 | 5 | 00000000 | 00000 |
| 7.55 | 5.05 | 1.27 | 19.609 | 11.8 | 2.2 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 8.99 | 7.11 | 0.97 | 15.443 | 4.6 | 0.48 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 10.8 | 8.2 | 1.3 | 16.535 | 9 | 1.07 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 10.8 | 9.02 | 0.89 | 13.614 | 3 | 0.27 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 11.99 | 9.19 | 1.4 | 16.053 | 10.1 | 1.13 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 11.99 | 10.11 | 0.97 | 14.834 | 3.5 | 0.31 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 13.51 | 11.33 | 1.09 | 11.989 | 4.5 | 0.34 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 0000000 | 0000 |
| 15.01 | 11.81 | 1.6 | 15.443 | 12 | 1.26 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 15.01 | 12.63 | 1.19 | 10.312 | 5.2 | 0.35 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 18.29 | 14.27 | 2.03 | 16.688 | 19.4 | 2.22 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
| 18.29 | 15.49 | 1.4 | 13.386 | 6.8 | 0.58 | Passivated 316 Stainless Steel | Closed and Ground | __ | 1 | 00000000 | 0000 |
Extension Springs with Loop 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 millimeter of extension.
Load, lbs. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| OD, mm | Wire Dia., mm | Extended Lg. @ Max. Load, mm | Min. | Max. | Spring Rate, lbs./mm | Material | Pkg. Qty. | Pkg. | |
25 mm Lg. | |||||||||
| 7 | 1 | 38.1 | 1.84 | 10.18 | 0.661 | Music-Wire Steel | 2 | 00000000 | 000000 |
Corrosion-Resistant Extension Springs with Loop 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.
302 stainless steel springs have good corrosion resistance.
Load, lbs. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| OD, mm | Wire Dia., mm | Extended Lg. @ Max. Load , mm | Min. | Max. | Spring Rate, lbs./mm | Material | Pkg. Qty. | Pkg. | |
25 mm Lg. | |||||||||
| 7 | 1 | 38.1 | 1.84 | 8.48 | 0.551 | 302 Stainless Steel | 2 | 00000000 | 000000 |
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.
302 stainless steel springs have good corrosion resistance.
Load, lbs. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| OD, mm | Wire Dia., mm | Extended Lg. @ Max. Load, mm | Min. | Max. | Spring Rate, lbs./mm | Material | Pkg. Qty. | Pkg. | |
25 mm Lg. | |||||||||
| 7 | 1 | 38.1 | 1.84 | 8.48 | 0.55 | 302 Stainless Steel | 2 | 00000000 | 000000 |
Metric Color-Coded Die Springs
The colors and sizes of these springs follow ISO 10243 for metric die springs. Made of chrome-silicon steel, they have high tensile strength for reliable, long-lasting operation in repetitive applications, such as punching and stamping. All have closed and ground ends, which provide a flat mounting surface for even movement and distribution of loads.
Deflection is the distance the spring compresses, expressed as a percentage of its length.
As you squeeze a die spring, it gets harder to push. Spring rate is the amount of force required for every millimeter of compression. The higher the spring rate, the harder it is to compress the spring.
Wire | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg., mm | Thick., mm | Wd., mm | Compressed Lg. @ Max. Load, mm | Deflection @ Max. Load | Max. Load, lbs. | Spring Rate, lbs./mm | Material | End Type | Each | |
Green (Light Load Rating) | ||||||||||
For 10 mm Hole Dia. (For 5 mm Shaft Dia.) | ||||||||||
| 25 | 0.99 | 1.78 | 16.2 | 35% | 19 | 2.2 | Chrome-Silicon Steel | Closed and Ground | 0000000 | 00000 |
For 12.5 mm Hole Dia. (For 6 mm Shaft Dia.) | ||||||||||
| 25 | 1.32 | 2.36 | 16.2 | 35% | 35 | 4 | Chrome-Silicon Steel | Closed and Ground | 00000000 | 0000 |
For 16 mm Hole Dia. (For 8 mm Shaft Dia.) | ||||||||||
| 25 | 1.75 | 2.77 | 16.2 | 35% | 46 | 5.2 | Chrome-Silicon Steel | Closed and Ground | 00000000 | 0000 |
For 20 mm Hole Dia. (For 10 mm Shaft Dia.) | ||||||||||
| 25 | 1.91 | 4.19 | 16.2 | 35% | 109 | 12.5 | Chrome-Silicon Steel | Closed and Ground | 00000000 | 0000 |
For 25 mm Hole Dia. (For 12.5 mm Shaft Dia.) | ||||||||||
| 25 | 2.54 | 5.46 | 16.2 | 35% | 196 | 22 | Chrome-Silicon Steel | Closed and Ground | 00000000 | 0000 |
Blue (Medium Load Rating) | ||||||||||
For 10 mm Hole Dia. (For 5 mm Shaft Dia.) | ||||||||||
| 25 | 1.17 | 1.85 | 17.5 | 30% | 26 | 3.5 | Chrome-Silicon Steel | Closed and Ground | 00000000 | 0000 |
For 12.5 mm Hole Dia. (For 6 mm Shaft Dia.) | ||||||||||
| 25 | 1.55 | 2.39 | 17.5 | 30% | 50 | 6.7 | Chrome-Silicon Steel | Closed and Ground | 00000000 | 0000 |
For 16 mm Hole Dia. (For 8 mm Shaft Dia.) | ||||||||||
| 25 | 2.06 | 3.12 | 17.5 | 30% | 83 | 11.1 | Chrome-Silicon Steel | Closed and Ground | 00000000 | 0000 |
For 20 mm Hole Dia. (For 10 mm Shaft Dia.) | ||||||||||
| 25 | 2.36 | 3.96 | 17.5 | 30% | 165 | 22 | Chrome-Silicon Steel | Closed and Ground | 00000000 | 0000 |
For 25 mm Hole Dia. (For 12.5 mm Shaft Dia.) | ||||||||||
| 25 | 2.92 | 5.54 | 17.5 | 30% | 247 | 33 | Chrome-Silicon Steel | Closed and Ground | 00000000 | 0000 |
Red (Heavy Load Rating) | ||||||||||
For 10 mm Hole Dia. (For 5 mm Shaft Dia.) | ||||||||||
| 25 | 1.37 | 1.83 | 18.7 | 25% | 31 | 4.9 | Chrome-Silicon Steel | Closed and Ground | 00000000 | 0000 |
For 12.5 mm Hole Dia. (For 6 mm Shaft Dia.) | ||||||||||
| 25 | 1.83 | 2.41 | 18.7 | 25% | 59 | 9.4 | Chrome-Silicon Steel | Closed and Ground | 0000000 | 0000 |
For 16 mm Hole Dia. (For 8 mm Shaft Dia.) | ||||||||||
| 25 | 2.36 | 3.18 | 18.7 | 25% | 106 | 17 | Chrome-Silicon Steel | Closed and Ground | 00000000 | 0000 |
For 20 mm Hole Dia. (For 10 mm Shaft Dia.) | ||||||||||
| 25 | 3.18 | 4.19 | 18.7 | 25% | 303 | 48 | Chrome-Silicon Steel | Closed and Ground | 00000000 | 0000 |
For 25 mm Hole Dia. (For 12.5 mm Shaft Dia.) | ||||||||||
| 25 | 4.01 | 5.61 | 18.7 | 25% | 526 | 84 | Chrome-Silicon Steel | Closed and Ground | 00000000 | 0000 |
Yellow (Extra Heavy Load Rating) | ||||||||||
For 10 mm Hole Dia. (For 5 mm Shaft Dia.) | ||||||||||
| 25 | 1.50 | 2.03 | 20 | 20% | 41 | 8.2 | Chrome-Silicon Steel | Closed and Ground | 00000000 | 0000 |
For 12.5 mm Hole Dia. (For 6 mm Shaft Dia.) | ||||||||||
| 25 | 2.13 | 2.46 | 20 | 20% | 65 | 13.1 | Chrome-Silicon Steel | Closed and Ground | 00000000 | 0000 |
For 16 mm Hole Dia. (For 8 mm Shaft Dia.) | ||||||||||
| 25 | 2.79 | 3.20 | 20 | 20% | 132 | 26 | Chrome-Silicon Steel | Closed and Ground | 00000000 | 0000 |
For 20 mm Hole Dia. (For 10 mm Shaft Dia.) | ||||||||||
| 25 | 4.09 | 4.06 | 20 | 20% | 329 | 65 | Chrome-Silicon Steel | Closed and Ground | 0000000 | 0000 |