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Extra-Stretch Extension Springs
These fabric-covered rubber springs stretch up to three times their original length—much farther than traditional extension springs, tie downs, and shock cords. All have carabiner ends with spring-loaded latch openings. Do not use to hold overhead loads.
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. | Carabiner | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| OD | Extended Lg. @ Max. Load | Min. | Max. | Spring Rate, lbs./in.  | Material | Sleeve Material | Lg. | Opening Wd. | Material | Temperature Range, °F | Each | |
24" Lg. | ||||||||||||
| 1" | 60" | Not Rated | 33 | 0.92 | Latex Rubber | Polypropylene Fabric | 2" | 5/16" | Black-Oxide Steel | 30° to 130° | 0000000 | 000000 |
| 1.75" | 60" | Not Rated | 47 | 1.31 | Latex Rubber | Polypropylene Fabric | 2" | 5/16" | Black-Oxide Steel | 30° to 130° | 0000000 | 00000 |
| 1.75" | 60" | Not Rated | 77 | 2.14 | Latex Rubber | Polypropylene Fabric | 2" | 5/16" | Black-Oxide Steel | 30° to 130° | 0000000 | 00000 |
Wear-Resistant 1095 Spring Steel Sheets and Strips
- Yield Strength: Not Rated
- Hardness: Rockwell C50 (Very Hard)
1095 spring steel has a higher carbon content than 1075 spring steel for better wear resistance. It is often fabricated into parts that will be used under continual stress, such as spring clips and washers. This material is also known as blue-tempered steel.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
| Wd. | Lg., ft. | Heat Treatment | Mechanical Finish | Color | Each | |
0.004" Thick. (-0.0004" to 0.0004" Tolerance) | ||||||
|---|---|---|---|---|---|---|
| 6" | 2 | Hardened | Polished | Blue | 00000000 | 000000 |
0.005" Thick. (-0.0005" to 0.0005" Tolerance) | ||||||
| 6" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
0.008" Thick. (-0.0008" to 0.0008" Tolerance) | ||||||
| 6" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
0.01" Thick. (-0.001" to 0.001" Tolerance) | ||||||
| 12 3/8" | 2 | Hardened | Polished | Blue | 0000000 | 00000 |
0.015" Thick. (-0.001" to 0.001" Tolerance) | ||||||
| 8" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 10" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 12 3/8" | 2 | Hardened | Polished | Blue | 0000000 | 00000 |
0.02" Thick. (-0.001" to 0.001" Tolerance) | ||||||
| 8" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 10" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 12 3/8" | 2 | Hardened | Polished | Blue | 0000000 | 00000 |
0.025" Thick. (-0.001" to 0.001" Tolerance) | ||||||
| 6" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 8" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 10" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 12 3/8" | 2 | Hardened | Polished | Blue | 0000000 | 00000 |
0.028" Thick. (-0.001" to 0.001" Tolerance) | ||||||
| 6" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 8" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
0.03" Thick. (-0.002" to 0.002" Tolerance) | ||||||
| 6" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 8" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
0.032" Thick. (-0.002" to 0.002" Tolerance) | ||||||
| 6" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 8" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 10" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 12 3/8" | 2 | Hardened | Polished | Blue | 0000000 | 00000 |
0.035" Thick. (-0.002" to 0.002" Tolerance) | ||||||
| 6" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 8" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 12 3/8" | 2 | Hardened | Polished | Blue | 0000000 | 00000 |
0.042" Thick. (-0.002" to 0.002" Tolerance) | ||||||
| 4" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 6" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 12 3/8" | 2 | Hardened | Polished | Blue | 0000000 | 00000 |
0.05" Thick. (-0.002" to 0.002" Tolerance) | ||||||
| 3" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 4" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 12 3/8" | 2 | Hardened | Polished | Blue | 0000000 | 00000 |
0.062" Thick. (-0.002" to 0.002" Tolerance) | ||||||
| 2 1/2" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 3" | 2 | Hardened | Polished | Blue | 00000000 | 00000 |
| 12 3/8" | 2 | Hardened | Polished | Blue | 0000000 | 00000 |
Easy-to-Form Wear-Resistant 1095 Spring Steel Sheets
- Yield Strength: Not Rated
- Hardness: Rockwell B90 (Medium)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Not Rated
These sheets have a softened temper, which is also known as annealed, so they can be easily formed into shape and then heat treated for spring properties. 1095 spring steel has a higher carbon content than 1075 spring steel for better wear resistance. It is often fabricated into parts that will be used under continual stress, such as spring clips and washers.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
8" × 24" | 24" × 24" | ||||||
|---|---|---|---|---|---|---|---|
| Thick. | Thick. Tolerance | Heat Treatment | Flatness Tolerance | Each | Each | ||
| 0.015" | -0.002" to 0.002" | Annealed (Softened) | 3/8" | 00000000 | 000000 | 000000 | 00 |
| 0.02" | -0.002" to 0.002" | Annealed (Softened) | 3/8" | 00000000 | 00000 | 00000000 | 000000 |
| 0.025" | -0.002" to 0.002" | Annealed (Softened) | 3/8" | 0000000 | 00000 | 00000000 | 00000 |
| 0.032" | -0.002" to 0.002" | Annealed (Softened) | 3/8" | 0000000 | 00000 | 00000000 | 00000 |
| 0.035" | -0.002" to 0.002" | Annealed (Softened) | 3/8" | 0000000 | 00000 | 00000000 | 00000 |
| 0.042" | -0.002" to 0.002" | Annealed (Softened) | 3/8" | 0000000 | 00000 | 00000000 | 00000 |
| 0.05" | -0.002" to 0.002" | Annealed (Softened) | 3/8" | 0000000 | 00000 | 00000000 | 00000 |
| 0.062" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 00000 | 000000 | 00 |
| 0.062" | -0.002" to 0.002" | Annealed (Softened) | 3/8" | 000000 | 00 | 00000000 | 00000 |
| 0.065" | -0.002" to 0.002" | Annealed (Softened) | 3/8" | 000000 | 00 | 00000000 | 00000 |
| 0.072" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 00000 | 000000 | 00 |
| 0.072" | -0.002" to 0.002" | Annealed (Softened) | 3/8" | 000000 | 00 | 00000000 | 00000 |
| 0.078" | -0.002" to 0.002" | Annealed (Softened) | 3/8" | 00000000 | 00000 | 00000000 | 00000 |
| 0.083" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 00000 | 000000 | 00 |
| 0.094" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 00000 | 00000000 | 00000 |
| 0.109" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 00000 | 00000000 | 000000 |
| 1/8" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 00000 | 00000000 | 000000 |
| 0.134" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 00000000 | 00000 | 00000000 | 000000 |
| 0.156" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 00000000 | 00000 | 00000000 | 000000 |
| 0.187" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 000000 | 00000000 | 000000 |
1075 Spring Steel Strips
- Yield Strength: Not Rated
- Hardness: Rockwell C45 (Hard)
1075 spring steel is easier to bend than 1095, but it has less bounce-back after heat treating. It is often used for springs and shims. This material is also known as scaleless steel.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Easy-to-Form 1075 Spring Steel Sheets
- Yield Strength: 50,000 psi
- Hardness: Rockwell B90 (Medium)
- Heat Treatable: Yes
- Max. Hardness After Heat Treatment: Rockwell C64
- Specifications Met: ASTM A684
These sheets have a softened temper, which is also known as annealed, so they can be easily formed into shape and then heat treated for spring properties. 1075 spring steel is easier to bend than 1095, but it has less bounce-back after heat treating. It is often used for springs and shims.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
8" × 24" | |||||
|---|---|---|---|---|---|
| Thick. | Thick. Tolerance | Heat Treatment | Flatness Tolerance | Each | |
| 0.015" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 000000 |
| 0.02" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 00000 |
| 0.025" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 00000 |
| 0.032" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 00000 |
| 0.035" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 00000 |
| 0.042" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 00000 |
| 0.05" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 00000 |
| 0.062" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 00000 |
| 0.072" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 00000 |
| 0.083" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 00000 |
| 0.094" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 00000 |
| 0.109" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 00000 |
| 0.125" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 00000 |
| 0.187" | -0.003" to 0.003" | Annealed (Softened) | 3/8" | 0000000 | 000000 |
Easy-To-Form Multipurpose 1050 Spring Steel Sheets
- Yield Strength: 38,000 psi
- Hardness: Rockwell B74
- Heat Treatable: Yes
- Maximum Hardness After Heat Treatment: Rockwell C58
- Specifications Met: ASTM A682, ASTM A684
Containing more carbon than low-carbon steel—but less than 1095 spring steel—1050 spring steel is easily formed into parts such as washers, brackets, and springs before being hardened for use. It resists stress, so it won’t snap when formed or twisted. Because it has a lower carbon content than 1095 spring steel, it’s not as wear resistant.
For technical drawings and 3-D models, click on a part number.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
8" × 24" | |||||
|---|---|---|---|---|---|
| Thickness | Thickness Tolerance | Heat Treatment | Flatness Tolerance | Each | |
| 0.025" | -0.003" to 0.003" | Annealed (Softened) | Not Rated | 0000000 | 000000 |
| 0.032" | -0.003" to 0.003" | Annealed (Softened) | Not Rated | 0000000 | 00000 |
| 0.035" | -0.003" to 0.003" | Annealed (Softened) | Not Rated | 0000000 | 00000 |
| 0.042" | -0.003" to 0.003" | Annealed (Softened) | Not Rated | 0000000 | 00000 |
| 0.05" | -0.003" to 0.003" | Annealed (Softened) | Not Rated | 0000000 | 00000 |
| 0.062" | -0.003" to 0.003" | Annealed (Softened) | Not Rated | 0000000 | 00000 |
| 0.072" | -0.003" to 0.003" | Annealed (Softened) | Not Rated | 0000000 | 00000 |
| 0.083" | -0.003" to 0.003" | Annealed (Softened) | Not Rated | 0000000 | 00000 |
| 0.094" | -0.003" to 0.003" | Annealed (Softened) | Not Rated | 0000000 | 000000 |
| 0.109" | -0.003" to 0.003" | Annealed (Softened) | Not Rated | 00000000 | 000000 |
| 1/8" | -0.003" to 0.003" | Annealed (Softened) | Not Rated | 00000000 | 000000 |
| 0.187" | -0.003" to 0.003" | Annealed (Softened) | Not Rated | 00000000 | 000000 |
Winding Rods for Overhead Door Springs
Keep your overhead door balanced on both tracks for smooth, even opening and closing. These winding rods help you safely increase and decrease the tension on the springs that hold the door. Their ends are machined to fit snugly into the springs' tensioning holes, giving you good control and preventing these rods from slipping out as you tension. Use these rods in pairs. For better leverage and easier winding, choose longer rods.
For technical drawings and 3-D models, click on a part number.
Step | ||||||
|---|---|---|---|---|---|---|
| Dia. | Lg. | Dia. | Lg. | Material | Pair | |
| 5/8" | 24" | 9/16" | 1 1/4" | Steel | 0000000 | 000000 |