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DFARS Compliance
Compression Spring Stock
Keep these extra-long springs on hand so you can cut the right length whenever you need it.
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.
To determine the spring rate of a cut spring, first multiply the spring’s original length by the spring rate given, then divide the result by the cut length (in inches).
For technical drawings and 3-D models, click on a part number.
| OD | ID | Wire Dia. | Compressed Length @ Maximum Load | Maximum Load, lbs. | Spring Rate, lbs./in.  | Material | End Type | Pkg. Qty. | Pkg. | |
11" Lg. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 0.12" | 0.07" | 0.025" | 5.925" | 4.3 | 2.78 | Music-Wire Steel | Open | 5 | 0000000 | 000000 |
| 0.18" | 0.13" | 0.025" | 4.45" | 4.3 | 0.85 | Music-Wire Steel | Open | 5 | 0000000 | 00000 |
| 0.21" | 0.148" | 0.031" | 5.5148" | 6.1 | 1.31 | Music-Wire Steel | Open | 5 | 0000000 | 00000 |
| 0.24" | 0.17" | 0.035" | 3.885" | 6 | 2.28 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.24" | 0.178" | 0.031" | 3.689" | 6 | 1.23 | Music-Wire Steel | Open | 5 | 0000000 | 00000 |
| 0.24" | 0.184" | 0.028" | 3.416" | 4.6 | 0.77 | Music-Wire Steel | Open | 5 | 0000000 | 00000 |
| 0.24" | 0.19" | 0.025" | 3.325" | 2.8 | 0.43 | Music-Wire Steel | Open | 5 | 0000000 | 00000 |
| 0.3" | 0.23" | 0.035" | 3.885" | 4.9 | 1.05 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.3" | 0.238" | 0.031" | 2.759" | 4.9 | 0.78 | Music-Wire Steel | Open | 5 | 0000000 | 00000 |
| 0.3" | 0.244" | 0.028" | 3.724" | 2.3 | 0.33 | Music-Wire Steel | Open | 5 | 0000000 | 00000 |
| 0.36" | 0.266" | 0.047" | 4.183" | 9.3 | 2.6 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.36" | 0.278" | 0.041" | 4.1" | 6.4 | 1.26 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.36" | 0.29" | 0.035" | 3.885" | 3.5 | 0.57 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.36" | 0.298" | 0.031" | 2.759" | 3 | 0.42 | Music-Wire Steel | Open | 5 | 0000000 | 00000 |
| 0.42" | 0.296" | 0.062" | 5.518" | 17.2 | 5.26 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.42" | 0.312" | 0.054" | 3.618" | 11.8 | 3.78 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.42" | 0.326" | 0.047" | 3.666" | 8 | 1.76 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.42" | 0.35" | 0.035" | 2.73" | 3.5 | 0.49 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.48" | 0.32" | 0.08" | 5.52" | 30.5 | 13.53 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.48" | 0.356" | 0.062" | 4.278" | 15.2 | 4.28 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.48" | 0.372" | 0.054" | 4.212" | 10.4 | 2.05 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.48" | 0.386" | 0.047" | 3.925" | 6.3 | 1.05 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.48" | 0.398" | 0.041" | 3.647" | 3.4 | 0.55 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.54" | 0.416" | 0.062" | 3.72" | 13.7 | 3.3 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.6" | 0.418" | 0.091" | 5.46" | 35.4 | 12.67 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.6" | 0.44" | 0.08" | 4.8" | 25 | 7.1 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.6" | 0.456" | 0.072" | 4.824" | 18.7 | 3.98 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.6" | 0.476" | 0.062" | 3.72" | 12.4 | 2.31 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.6" | 0.492" | 0.054" | 3.024" | 8.4 | 1.37 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.656" | 0.532" | 0.062" | 3.72" | 6.2 | 1.72 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.72" | 0.51" | 0.105" | 5.88" | 44.5 | 13.66 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.72" | 0.538" | 0.091" | 4.95" | 30.1 | 9 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.72" | 0.56" | 0.08" | 3.2" | 21.1 | 5.76 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.72" | 0.596" | 0.062" | 2.79" | 10.4 | 1.69 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.781" | 0.657" | 0.062" | 2.79" | 9.6 | 1.3 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.844" | 0.684" | 0.08" | 2.8" | 18.2 | 3.88 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.969" | 0.759" | 0.105" | 4.725" | 33.8 | 6.18 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.969" | 0.787" | 0.091" | 3.46" | 22.8 | 3.75 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 0.969" | 0.809" | 0.08" | 2" | 15.9 | 3.5 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 1.094" | 0.864" | 0.115" | 4.6" | 38.8 | 6.89 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 1.094" | 0.884" | 0.105" | 2.9" | 30.2 | 6.71 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 1.094" | 0.912" | 0.091" | 3.46" | 125.7 | 2.51 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 1.219" | 0.989" | 0.115" | 1.955" | 35 | 8.15 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 1.219" | 1.037" | 0.091" | 2.184" | 18.3 | 2.99 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 1.219" | 1.059" | 0.08" | 2" | 12.8 | 1.66 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 1.344" | 1.162" | 0.091" | 2.02" | 16.7 | 2.39 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
| 1.469" | 1.239" | 0.115" | 1.955" | 29.3 | 6.34 | Spring-Tempered Steel | Open | 5 | 0000000 | 00000 |
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.
For technical drawings and 3-D models, click on a part number.
Inch
Load, lbs. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| OD | Wire Dia. | Extended Lg. @ Max. Load | Min. | Max. | Spring Rate, lbs./in. | Material | Pkg. Qty. | Pkg. | |
11" Lg. | |||||||||
| 0.125" | 0.014" | 23.2" | 0.15 | 0.76 | 0.05 | Music-Wire Steel | 1 | 00000000 | 00000 |
| 0.125" | 0.016" | 18.64" | 0.26 | 1.1 | 0.11 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.125" | 0.018" | 16.29" | 0.41 | 1.52 | 0.21 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.125" | 0.025" | 12.8" | 1.38 | 3.72 | 1.3 | Music-Wire Steel | 1 | 0000000 | 0000 |
| 0.156" | 0.016" | 25.4" | 0.17 | 0.89 | 0.05 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.156" | 0.018" | 20.7" | 0.27 | 1.24 | 0.1 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.156" | 0.02" | 18.47" | 0.4 | 1.67 | 0.17 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.188" | 0.016" | 32.33" | 0.11 | 0.75 | 0.03 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.188" | 0.018" | 28.4" | 0.18 | 1.05 | 0.05 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.188" | 0.02" | 23.56" | 0.28 | 1.41 | 0.09 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.188" | 0.023" | 18.95" | 0.49 | 2.08 | 0.2 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.188" | 0.025" | 17.26" | 0.68 | 2.62 | 0.31 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.25" | 0.013" | 86" | 0.02 | 0.32 | 0.004 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.25" | 0.018" | 46" | 0.09 | 0.79 | 0.02 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.25" | 0.02" | 34" | 0.15 | 1.07 | 0.04 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.25" | 0.023" | 27.38" | 0.27 | 1.58 | 0.08 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.25" | 0.025" | 24.42" | 0.39 | 2 | 0.12 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.25" | 0.028" | 20.68" | 0.61 | 2.74 | 0.22 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.25" | 0.031" | 18.38" | 0.91 | 3.64 | 0.37 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.25" | 0.035" | 14.63" | 1.46 | 4.11 | 0.73 | Spring-Tempered Steel | 1 | 00000000 | 0000 |
| 0.313" | 0.02" | 50" | 0.08 | 0.86 | 0.02 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.313" | 0.025" | 34.17" | 0.23 | 1.62 | 0.06 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.313" | 0.028" | 29.4" | 0.38 | 2.22 | 0.1 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.313" | 0.031" | 24.17" | 0.58 | 2.95 | 0.18 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.313" | 0.035" | 18.03" | 0.96 | 3.35 | 0.34 | Spring-Tempered Steel | 1 | 00000000 | 0000 |
| 0.313" | 0.041" | 15.2" | 1.78 | 5.18 | 0.81 | Spring-Tempered Steel | 1 | 0000000 | 0000 |
| 0.375" | 0.025" | 51.67" | 0.14 | 1.36 | 0.03 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.375" | 0.028" | 37.83" | 0.25 | 1.86 | 0.06 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.375" | 0.031" | 31.9" | 0.39 | 2.48 | 0.1 | Music-Wire Steel | 1 | 0000000 | 0000 |
| 0.375" | 0.035" | 22.42" | 0.65 | 2.82 | 0.19 | Spring-Tempered Steel | 1 | 00000000 | 0000 |
| 0.375" | 0.037" | 24" | 0.82 | 4.07 | 0.25 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.375" | 0.041" | 18.07" | 1.26 | 4.37 | 0.44 | Spring-Tempered Steel | 1 | 00000000 | 0000 |
| 0.375" | 0.047" | 15.61" | 2.14 | 6.38 | 0.92 | Spring-Tempered Steel | 1 | 00000000 | 0000 |
| 0.438" | 0.035" | 27.42" | 0.46 | 2.43 | 0.12 | Spring-Tempered Steel | 1 | 00000000 | 0000 |
| 0.438" | 0.047" | 18.18" | 1.58 | 5.53 | 0.55 | Spring-Tempered Steel | 1 | 0000000 | 0000 |
| 0.438" | 0.054" | 15.71" | 2.75 | 8.12 | 1.14 | Spring-Tempered Steel | 1 | 00000000 | 0000 |
| 0.5" | 0.031" | 53.5" | 0.18 | 1.88 | 0.04 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.5" | 0.037" | 37.7" | 0.42 | 3.09 | 0.1 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.5" | 0.041" | 26.71" | 0.66 | 3.33 | 0.17 | Spring-Tempered Steel | 1 | 00000000 | 0000 |
| 0.5" | 0.047" | 21.22" | 1.19 | 4.87 | 0.36 | Spring-Tempered Steel | 1 | 00000000 | 0000 |
| 0.5" | 0.054" | 17.92" | 2.11 | 7.16 | 0.73 | Spring-Tempered Steel | 1 | 0000000 | 0000 |
| 0.5" | 0.062" | 15.44" | 3.65 | 10.48 | 1.54 | Spring-Tempered Steel | 1 | 00000000 | 0000 |
| 0.625" | 0.037" | 56.2" | 0.23 | 2.49 | 0.05 | Music-Wire Steel | 1 | 00000000 | 0000 |
| 0.625" | 0.047" | 28.94" | 0.7 | 3.93 | 0.18 | Spring-Tempered Steel | 1 | 00000000 | 0000 |
| 0.625" | 0.054" | 23.86" | 1.3 | 5.8 | 0.35 | Spring-Tempered Steel | 1 | 00000000 | 0000 |
| 0.625" | 0.062" | 19.36" | 2.32 | 8.51 | 0.74 | Spring-Tempered Steel | 1 | 0000000 | 0000 |
| 0.625" | 0.072" | 16.21" | 4.26 | 12.86 | 1.65 | Spring-Tempered Steel | 1 | 0000000 | 0000 |
| 0.625" | 0.08" | 14.69" | 6.45 | 17.18 | 2.91 | Spring-Tempered Steel | 1 | 00000000 | 0000 |
| 0.75" | 0.047" | 39.7" | 0.43 | 3.3 | 0.1 | Spring-Tempered Steel | 1 | 0000000 | 0000 |
| 0.75" | 0.062" | 24.68" | 1.54 | 7.15 | 0.41 | Spring-Tempered Steel | 1 | 0000000 | 0000 |
| 0.75" | 0.08" | 17.24" | 4.51 | 14.5 | 1.6 | Spring-Tempered Steel | 1 | 0000000 | 0000 |
| 0.75" | 0.091" | 15.11" | 7.54 | 20.68 | 3.2 | Spring-Tempered Steel | 1 | 0000000 | 0000 |
| 1" | 0.062" | 38.59" | 0.73 | 5.42 | 0.17 | Spring-Tempered Steel | 1 | 00000000 | 0000 |
| 1" | 0.08" | 24.52" | 2.38 | 11.03 | 0.64 | Spring-Tempered Steel | 1 | 0000000 | 0000 |
| 1" | 0.091" | 20.16" | 4.15 | 15.78 | 1.27 | Spring-Tempered Steel | 1 | 0000000 | 0000 |
| 1" | 0.105" | 16.85" | 7.52 | 23.43 | 2.72 | Spring-Tempered Steel | 1 | 0000000 | 0000 |
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.
Inch
Load, lbs. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| OD | Wire Dia. | Extended Lg. @ Max. Load | Min. | Max. | Spring Rate, lbs./in. | Material | Pkg. Qty. | Pkg. | |
11" Lg. | |||||||||
| 0.125" | 0.014" | 20.6" | 0.15 | 0.63 | 0.05 | 302 Stainless Steel | 3 | 0000000 | 000000 |
| 0.188" | 0.025" | 16.81" | 0.68 | 2.25 | 0.27 | 302 Stainless Steel | 1 | 0000000 | 0000 |
| 0.25" | 0.031" | 17.76" | 0.91 | 3.14 | 0.33 | 302 Stainless Steel | 1 | 0000000 | 0000 |
| 0.375" | 0.031" | 30.56" | 0.39 | 2.15 | 0.09 | 302 Stainless Steel | 1 | 0000000 | 0000 |
| 0.375" | 0.047" | 16.9" | 2.14 | 6.86 | 0.8 | 302 Stainless Steel | 1 | 0000000 | 0000 |
| 0.5" | 0.047" | 26.9" | 0.31 | 5.24 | 0.31 | 302 Stainless Steel | 1 | 0000000 | 0000 |
| 0.5" | 0.054" | 22.22" | 0.63 | 7.7 | 0.63 | 302 Stainless Steel | 1 | 0000000 | 0000 |
| 0.5" | 0.062" | 18.4" | 1.34 | 11.26 | 1.34 | 302 Stainless Steel | 1 | 0000000 | 00000 |
| 0.625" | 0.062" | 21.64" | 2.33 | 9.14 | 0.64 | 302 Stainless Steel | 1 | 0000000 | 00000 |
| 0.625" | 0.08" | 15.69" | 6.45 | 18.32 | 2.53 | 302 Stainless Steel | 1 | 0000000 | 00000 |
| 0.75" | 0.047" | 50" | 0.43 | 3.55 | 0.08 | 302 Stainless Steel | 1 | 0000000 | 00000 |
| 0.75" | 0.062" | 28.06" | 1.54 | 7.68 | 0.36 | 302 Stainless Steel | 1 | 0000000 | 00000 |
| 0.75" | 0.08" | 18.88" | 4.51 | 15.46 | 1.39 | 302 Stainless Steel | 1 | 0000000 | 00000 |
| 0.75" | 0.091" | 16.17" | 7.54 | 21.92 | 2.78 | 302 Stainless Steel | 1 | 0000000 | 00000 |
| 1" | 0.062" | 44.93" | 0.73 | 5.82 | 0.15 | 302 Stainless Steel | 1 | 0000000 | 00000 |
| 1" | 0.08" | 27.75" | 2.38 | 11.76 | 0.56 | 302 Stainless Steel | 1 | 0000000 | 00000 |
| 1" | 0.091" | 22.44" | 4.15 | 16.73 | 1.1 | 302 Stainless Steel | 1 | 0000000 | 00000 |
| 1" | 0.105" | 18.22" | 7.52 | 24.64 | 2.37 | 302 Stainless Steel | 1 | 0000000 | 00000 |
Torsion Spring Storm Door and Gate Closers
2
1
Mounted diagonally so one end is higher than the other, the motion of an opening door tightens the torsion spring; as it unwinds, it closes the door. All are reversible for right or left door-swing directions.