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.
Zinc-plated springs have mild corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Load, lbs. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| OD | Wire Dia. | Extended Lg. @ Max. Load | Min. | Max. | Spring Rate, lbs./in.  | Material | Pkg. Qty. | Pkg. | |
8.5" Lg. | |||||||||
| 0.344" | 0.048" | 13.375" | 2.64 | 10.88 | 1.69 | Zinc-Plated Spring-Tempered Steel | 3 | 00000000 | 00000 |
| 0.438" | 0.054" | 12.06" | 2.75 | 8.12 | 1.51 | Zinc-Plated Spring-Tempered Steel | 3 | 00000000 | 00000 |
| 0.813" | 0.062" | 22.92" | 0.43 | 6.63 | 0.43 | Zinc-Plated Spring-Tempered Steel | 3 | 00000000 | 00000 |
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.
For technical drawings and 3-D models, click on a part number.
Load, lbs. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| OD | Wire Dia. | Extended Lg. @ Max. Load | Min. | Max. | Spring Rate, lbs./in. | Material | Pkg. Qty. | Pkg. | |
8.5" Lg. | |||||||||
| 1" | 0.105" | 13.43" | 7.52 | 23.43 | 3.23 | 302 Stainless Steel | 1 | 000000000 | 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.
For technical drawings and 3-D models, click on a part number.
Load, lbs. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| OD | Wire Dia. | Extended Lg. @ Max. Load | Min. | Max. | Spring Rate, lbs./in. | Material | Pkg. Qty. | Pkg. | |
8.5" Lg. | |||||||||
| 1" | 0.106" | 15.95" | 7.09 | 35 | 3.75 | Zinc-Plated Spring-Tempered Steel | 1 | 00000000 | 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.
302 stainless steel springs have good corrosion resistance.
For technical drawings and 3-D models, click on a part number.
Load, lbs. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| OD | Wire Dia. | Extended Lg. @ Max. Load | Min. | Max. | Spring Rate, lbs./in. | Material | Pkg. Qty. | Pkg. | |
8.5" Lg. | |||||||||
| 1" | 0.105" | 15.3" | 6.95 | 30.34 | 3.44 | 302 Stainless Steel | 1 | 00000000 | 000000 |
Extension Springs with Special Ends
For specialty applications and connections, these springs have unique end types.
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.
For technical drawings and 3-D models, click on a part number.
Load, lbs. | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Style | Lg. | OD | Wire Dia. | Extended Lg. @ Max. Load | Min. | Max. | Spring Rate, lbs./in. | Material | Pkg. Qty. | Pkg. | |
Elongated Hook | |||||||||||
| D | 8 1/2" | 0.468" | 0.054" | 10.08" | 2.31 | 10.36 | 5.22 | Galvanized Spring-Tempered Steel | 1 | 00000000 | 00000 |
Hook and Straight Wire | |||||||||||
| F | 8 1/2" | 0.75" | 0.094" | 13.5" | 4.5 | 20.5 | 17.1 | Galvanized Spring-Tempered Steel | 10 | 0000000 | 00000 |
Overload-Prevention Extension Springs
These zinc-plated steel springs have mild corrosion resistance. All have drawbars to prevent overextending, which can cause failure.
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.
For technical drawings and 3-D models, click on a part number.
Corrosion-Resistant Overload-Prevention Extension Springs
Made of stainless steel, these springs are more corrosion resistant than steel extension springs. All have drawbars to prevent overextending, which can cause failure.
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.
For technical drawings and 3-D models, click on a part number.