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.
Wire | Pkg. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OD | ID | Dia. | Compressed Lg. @ Max. Load | Max. Load, lbs. | Spring Rate, lbs./in.  | Material | End Type | Pkg. Qty. | 1-49 | 50-249 | 250-Up | |
3.125" Lg. | ||||||||||||
| 0.75" | 0.568" | 0.091" | 2.155" | 28.95 | 29.95 | Zinc-Plated Spring-Tempered Steel | Closed and Ground | 6 | 00000000 | 000000 | 000000 | 000000 |
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.
| OD | ID | Wire Dia. | Compressed Lg. @ Max. Load | Max. Load, lbs. | Spring Rate, lbs./in. | Material | End Type | Pkg. Qty. | Pkg. | |
3.125" Lg. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 0.75" | 0.568" | 0.091" | 1.747" | 37.76 | 27.41 | 302 Stainless Steel | Closed | 6 | 0000000 | 000000 |
Flanged Compression Springs
Flanges on the ends of these springs provide a flat mounting surface. Springs are a polyester/rubber blend that is wear, oil, and fuel resistant.
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.
Flange | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | OD | ID | OD | Thick. | Compressed Lg. @ Max. Load | Max. Load, lbs. | Spring Rate, lbs./in. | Material | Hardness | Temperature Range, °F | Each | |
| 3.125" | 3.76" | 2.5" | 4.76" | 0.5" | 1.94" | 1,300 | 895 | Polyester/Rubber Blend | Durometer 55D | -40° to 120° | 0000000 | 000000 |
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 | Wire Dia. | Extended Lg. @ Max. Load | Min. | Max. | Spring Rate, lbs./in. | Material | Pkg. Qty. | Pkg. | |
3.125" Lg. | |||||||||
| 0.313" | 0.047" | 4.731" | 2.84 | 14.94 | 7.11 | Spring-Tempered Steel | 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.
Zinc-plated springs have mild corrosion resistance.
Load, lbs. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| OD | Wire Dia. | Extended Lg. @ Max. Load | Min. | Max. | Spring Rate, lbs./in. | Material | Pkg. Qty. | Pkg. | |
3.125" Lg. | |||||||||
| 0.75" | 0.105" | 3.605" | 13.12 | 30.58 | 36.18 | Zinc-Plated Spring-Tempered Steel | 6 | 0000000 | 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.