System of Measurement System of Measurement |
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Length Length | Hide |
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Spring Type Spring Type |
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 | Extension |
Material Material |
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Wire Diameter Wire Diameter |
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Extended Length @ Maximum Load Extended Length@ Maximum Load |
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Load Load |
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Thread Size Thread Size |
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Thread Direction Thread Direction |
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Threading Threading |
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Thread Fit Thread Fit |
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Coupling Nut Profile Coupling Nut Profile |
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Thread Spacing Thread Spacing |
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Thread Type Thread Type |
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Color Color |
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Maximum Temperature Maximum Temperature |
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Minimum Temperature Minimum Temperature |
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About Nuts, Materials, and Finishes
More
Low-Strength Steel Coupling Nuts
Also known as extension nuts, use these to connect and extend threaded rods. They're about half the strength of medium-strength steel coupling nuts for use in light duty fastening applications.
Zinc-plated steel coupling nuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Each | |||||
|---|---|---|---|---|---|
| Thread Size | Lg. | Wd. | 1-9 | 10-Up | |
Zinc-Plated Steel | |||||
| 6-32 | 1/2" | 5/16" | 000000000 | 00000 | 00000 |
18-8 Stainless Steel Coupling Nuts
These coupling nuts have good chemical resistance and may be mildly magnetic. Also known as extension nuts, use them to connect and extend threaded rods.
For technical drawings and 3-D models, click on a part number.
Each | |||||
|---|---|---|---|---|---|
| Thread Size | Lg. | Wd. | 1-9 | 10-Up | |
18-8 Stainless Steel | |||||
| 6-32 | 1/2" | 5/16" | 000000000 | 00000 | 00000 |
Super-Corrosion-Resistant 316
Stainless Steel Coupling Nuts
These coupling nuts have excellent resistance to chemicals and salt water. Also known as extension nuts, use them to connect and extend threaded rods. They may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
Each | |||||
|---|---|---|---|---|---|
| Thread Size | Lg. | Wd. | 1-9 | 10-Up | |
316 Stainless Steel | |||||
| 6-32 | 1/2" | 5/16" | 000000000 | 00000 | 00000 |
Aluminum Coupling Nuts
One-third the weight of steel, these aluminum coupling nuts are corrosion resistant in wet environments and nonmagnetic. Also known as extension nuts, use them to connect and extend threaded rods.
For technical drawings and 3-D models, click on a part number.
Each | |||||
|---|---|---|---|---|---|
| Thread Size | Lg. | Wd. | 1-9 | 10-Up | |
6061 Aluminum | |||||
| 6-32 | 1/2" | 5/16" | 000000000 | 00000 | 00000 |
Brass Coupling Nuts
These coupling nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic. Also known as extension nuts, use them to connect and extend threaded rods.
For technical drawings and 3-D models, click on a part number.
Each | |||||
|---|---|---|---|---|---|
| Thread Size | Lg. | Wd. | 1-9 | 10-Up | |
Brass | |||||
| 6-32 | 1/2" | 5/16" | 000000000 | 00000 | 00000 |
Plastic Coupling Nuts
These nylon 6/6 coupling nuts are chemical resistant, nonconductive, and lightweight. Also known as extension nuts, use them to connect and extend threaded rods.
For technical drawings and 3-D models, click on a part number.
Each | ||||||||
|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Wd. | Threading | Max. Temp., °F | Color | 1-9 | 10-Up | |
Nylon 6/6 Plastic | ||||||||
| 6-32 | 1/2" | 3/8" | Fully Threaded | 250° | Off-White | 0000000 | 00000 | 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. 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. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| OD | Wire Dia. | Extended Lg. @ Max. Load | Min. | Max. | Rate, lbs./in. | Material | Pkg. Qty. | Pkg. | |
0.5" Lg. | |||||||||
| 0.063" | 0.007" | 1.12" | 0.03 | 0.32 | 0.4 | Music-Wire Steel | 5 | 00000000 | 000000 |
| 0.063" | 0.007" | 1.31" | 0.03 | 0.32 | 0.4 | Music-Wire Steel | 5 | 00000000 | 00000 |
| 0.063" | 0.008" | 0.91" | 0.04 | 0.45 | 0.9 | Music-Wire Steel | 5 | 00000000 | 00000 |
| 0.063" | 0.008" | 1.05" | 0.04 | 0.45 | 0.7 | Music-Wire Steel | 5 | 0000000 | 00000 |
| 0.063" | 0.009" | 0.77" | 0.06 | 0.62 | 1.7 | Music-Wire Steel | 5 | 00000000 | 00000 |
| 0.063" | 0.009" | 0.9" | 0.06 | 0.62 | 1.4 | Music-Wire Steel | 5 | 00000000 | 00000 |
| 0.063" | 0.011" | 0.65" | 0.1 | 1.09 | 4.8 | Music-Wire Steel | 5 | 00000000 | 00000 |
| 0.063" | 0.011" | 0.74" | 0.1 | 1.09 | 4.1 | Music-Wire Steel | 5 | 00000000 | 00000 |
| 0.094" | 0.01" | 1.03" | 0.05 | 0.6 | 0.9 | Music-Wire Steel | 5 | 00000000 | 00000 |
| 0.094" | 0.01" | 1.23" | 0.05 | 0.6 | 0.8 | Music-Wire Steel | 5 | 00000000 | 00000 |
| 0.094" | 0.011" | 0.87" | 0.06 | 0.7 | 1.5 | Music-Wire Steel | 5 | 00000000 | 00000 |
| 0.094" | 0.011" | 1.03" | 0.06 | 0.7 | 1.2 | Music-Wire Steel | 5 | 00000000 | 00000 |
| 0.094" | 0.012" | 0.82" | 0.1 | 1 | 2.4 | Music-Wire Steel | 5 | 00000000 | 00000 |
| 0.094" | 0.012" | 0.95" | 0.1 | 1 | 2 | Music-Wire Steel | 5 | 00000000 | 00000 |
| 0.094" | 0.013" | 0.73" | 0.1 | 1.15 | 3.6 | Music-Wire Steel | 5 | 00000000 | 00000 |
| 0.094" | 0.013" | 0.85" | 0.1 | 1.15 | 3 | Music-Wire Steel | 5 | 0000000 | 00000 |
| 0.094" | 0.014" | 0.68" | 0.17 | 1.5 | 5.5 | Music-Wire Steel | 5 | 00000000 | 00000 |
| 0.094" | 0.014" | 0.79" | 0.17 | 1.5 | 4.6 | Music-Wire Steel | 5 | 00000000 | 00000 |
| 0.094" | 0.016" | 0.62" | 0.19 | 2.15 | 11 | Music-Wire Steel | 5 | 00000000 | 00000 |
| 0.094" | 0.016" | 0.71" | 0.19 | 2.15 | 9.2 | Music-Wire Steel | 5 | 00000000 | 00000 |
| 0.12" | 0.016" | 0.82" | 0.2 | 1.6 | 4.6 | Music-Wire Steel | 5 | 00000000 | 0000 |
| 0.12" | 0.02" | 0.68" | 0.3 | 3 | 15.1 | Music-Wire Steel | 5 | 00000000 | 0000 |
| 0.125" | 0.014" | 0.754" | 0.15 | 0.76 | 2.4 | Music-Wire Steel | 12 | 00000000 | 0000 |
| 0.125" | 0.018" | 0.616" | 0.41 | 1.52 | 9.56 | Music-Wire Steel | 12 | 00000000 | 0000 |
| 0.18" | 0.022" | 0.73" | 0.2 | 2.6 | 10.5 | Music-Wire Steel | 3 | 0000000 | 0000 |
| 0.18" | 0.026" | 0.66" | 0.4 | 4.2 | 24.3 | Music-Wire Steel | 5 | 00000000 | 00000 |
| 0.18" | 0.031" | 0.61" | 0.6 | 6.8 | 59.4 | Music-Wire Steel | 5 | 00000000 | 00000 |
| 0.188" | 0.016" | 0.731" | 0.11 | 0.75 | 2.77 | Music-Wire Steel | 12 | 00000000 | 0000 |
| 0.188" | 0.02" | 0.62" | 0.28 | 1.41 | 9.41 | Music-Wire Steel | 12 | 00000000 | 0000 |
| 0.24" | 0.026" | 0.6" | 0.3 | 3.3 | 28.9 | Music-Wire Steel | 5 | 0000000 | 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. Rate is the amount of force required for every inch or millimeter of extension.
302 stainless steel springs have good corrosion resistance.
316 stainless steel springs have excellent 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. | Rate, lbs./in. | Material | Pkg. Qty. | Pkg. | |
0.5" Lg. | |||||||||
| 0.063" | 0.007" | 0.72" | 0.02 | 0.12 | 0.333 | 316 Stainless Steel | 2 | 00000000 | 000000 |
| 0.063" | 0.007" | 0.78" | 0.02 | 0.12 | 0.333 | 316 Stainless Steel | 2 | 00000000 | 00000 |
| 0.063" | 0.007" | 1.12" | 0.02 | 0.27 | 0.333 | 302 Stainless Steel | 3 | 00000000 | 00000 |
| 0.063" | 0.007" | 1.31" | 0.02 | 0.27 | 0.333 | 302 Stainless Steel | 3 | 00000000 | 00000 |
| 0.063" | 0.008" | 0.91" | 0.03 | 0.37 | 0.75 | 302 Stainless Steel | 3 | 00000000 | 00000 |
| 0.063" | 0.008" | 1.05" | 0.03 | 0.37 | 0.583 | 302 Stainless Steel | 3 | 00000000 | 00000 |
| 0.063" | 0.009" | 0.77" | 0.05 | 0.52 | 1.416 | 302 Stainless Steel | 3 | 00000000 | 00000 |
| 0.063" | 0.009" | 0.9" | 0.05 | 0.52 | 1.166 | 302 Stainless Steel | 3 | 00000000 | 00000 |
| 0.063" | 0.011" | 0.65" | 0.08 | 0.91 | 3.998 | 302 Stainless Steel | 3 | 00000000 | 00000 |
| 0.063" | 0.011" | 0.74" | 0.08 | 0.91 | 3.415 | 302 Stainless Steel | 3 | 00000000 | 00000 |
| 0.094" | 0.01" | 0.69" | 0.04 | 0.23 | 0.75 | 316 Stainless Steel | 2 | 00000000 | 00000 |
| 0.094" | 0.01" | 0.78" | 0.04 | 0.23 | 0.666 | 316 Stainless Steel | 2 | 00000000 | 00000 |
| 0.094" | 0.01" | 1.03" | 0.04 | 0.5 | 0.75 | 302 Stainless Steel | 3 | 00000000 | 00000 |
| 0.094" | 0.01" | 1.23" | 0.04 | 0.5 | 0.666 | 302 Stainless Steel | 3 | 00000000 | 00000 |
| 0.094" | 0.011" | 0.64" | 0.05 | 0.31 | 1.25 | 316 Stainless Steel | 2 | 0000000 | 00000 |
| 0.094" | 0.011" | 0.76" | 0.05 | 0.31 | 1 | 316 Stainless Steel | 2 | 00000000 | 00000 |
| 0.094" | 0.011" | 0.87" | 0.05 | 0.58 | 1.25 | 302 Stainless Steel | 3 | 00000000 | 00000 |
| 0.094" | 0.011" | 1.03" | 0.05 | 0.58 | 1 | 302 Stainless Steel | 3 | 00000000 | 00000 |
| 0.094" | 0.012" | 0.6" | 0.08 | 0.4 | 1.999 | 316 Stainless Steel | 2 | 00000000 | 00000 |
| 0.094" | 0.012" | 0.69" | 0.08 | 0.4 | 1.666 | 316 Stainless Steel | 2 | 00000000 | 00000 |
| 0.094" | 0.012" | 0.82" | 0.08 | 0.83 | 1.999 | 302 Stainless Steel | 3 | 00000000 | 00000 |
| 0.094" | 0.012" | 0.95" | 0.08 | 0.83 | 1.666 | 302 Stainless Steel | 3 | 00000000 | 00000 |
| 0.094" | 0.013" | 0.67" | 0.08 | 0.52 | 2.499 | 316 Stainless Steel | 2 | 00000000 | 00000 |
| 0.094" | 0.013" | 0.73" | 0.08 | 0.96 | 2.999 | 302 Stainless Steel | 3 | 00000000 | 00000 |
| 0.094" | 0.013" | 0.85" | 0.08 | 0.96 | 2.499 | 302 Stainless Steel | 3 | 00000000 | 00000 |
| 0.094" | 0.014" | 0.55" | 0.14 | 0.65 | 4.582 | 316 Stainless Steel | 2 | 00000000 | 00000 |
| 0.094" | 0.014" | 0.63" | 0.14 | 0.65 | 3.832 | 316 Stainless Steel | 2 | 00000000 | 00000 |
| 0.094" | 0.014" | 0.68" | 0.14 | 1.25 | 4.582 | 302 Stainless Steel | 3 | 00000000 | 00000 |
| 0.094" | 0.014" | 0.79" | 0.14 | 1.25 | 3.832 | 302 Stainless Steel | 3 | 00000000 | 00000 |
| 0.094" | 0.016" | 0.62" | 0.16 | 1.79 | 9.163 | 302 Stainless Steel | 3 | 0000000 | 00000 |
| 0.094" | 0.016" | 0.71" | 0.16 | 1.79 | 7.664 | 302 Stainless Steel | 3 | 0000000 | 00000 |
| 0.12" | 0.016" | 0.65" | 0.17 | 0.75 | 3.832 | 316 Stainless Steel | 2 | 00000000 | 00000 |
| 0.12" | 0.016" | 0.82" | 0.17 | 1.33 | 3.832 | 302 Stainless Steel | 5 | 00000000 | 00000 |
| 0.12" | 0.018" | 0.63" | 0.17 | 1.08 | 7.164 | 316 Stainless Steel | 2 | 0000000 | 00000 |
| 0.12" | 0.018" | 0.74" | 0.17 | 1.83 | 7.164 | 302 Stainless Steel | 5 | 00000000 | 00000 |
| 0.12" | 0.02" | 0.6" | 0.25 | 1.51 | 12.578 | 316 Stainless Steel | 2 | 00000000 | 00000 |
| 0.12" | 0.02" | 0.68" | 0.25 | 2.5 | 12.578 | 302 Stainless Steel | 5 | 00000000 | 00000 |
| 0.125" | 0.014" | 0.73" | 0.15 | 0.63 | 2.08 | 302 Stainless Steel | 6 | 000000000 | 00000 |
| 0.125" | 0.018" | 0.63" | 0.41 | 1.52 | 8.31 | 302 Stainless Steel | 6 | 000000000 | 00000 |
| 0.18" | 0.022" | 0.63" | 0.17 | 1.26 | 8.747 | 316 Stainless Steel | 2 | 00000000 | 00000 |
| 0.18" | 0.022" | 0.73" | 0.17 | 2.26 | 9.12 | 302 Stainless Steel | 3 | 00000000 | 0000 |
| 0.18" | 0.026" | 0.59" | 0.33 | 2.12 | 20.242 | 316 Stainless Steel | 2 | 00000000 | 00000 |
| 0.18" | 0.026" | 0.66" | 0.33 | 3.5 | 20.242 | 302 Stainless Steel | 5 | 00000000 | 00000 |
| 0.18" | 0.031" | 0.56" | 0.5 | 3.69 | 49.48 | 316 Stainless Steel | 2 | 00000000 | 00000 |
| 0.18" | 0.031" | 0.61" | 0.5 | 5.66 | 49.48 | 302 Stainless Steel | 5 | 00000000 | 00000 |
| 0.188" | 0.016" | 0.72" | 0.11 | 0.63 | 2.39 | 302 Stainless Steel | 3 | 000000000 | 0000 |
| 0.188" | 0.02" | 0.61" | 0.28 | 1.2 | 8.11 | 302 Stainless Steel | 3 | 000000000 | 0000 |
| 0.24" | 0.026" | 0.55" | 0.25 | 1.53 | 24.074 | 316 Stainless Steel | 2 | 00000000 | 00000 |
| 0.24" | 0.026" | 0.6" | 0.25 | 2.75 | 24.074 | 302 Stainless Steel | 5 | 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. Rate is the amount of force required for every inch of extension or, for metric springs, millimeter of compression.
302 stainless steel springs have good corrosion resistance.
316 stainless steel springs have excellent 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. | Rate, lbs./in. | Material | Pkg. Qty. | Pkg. | |
0.5" Lg. | |||||||||
| 0.094" | 0.01" | 0.97" | 0.05 | 0.36 | 0.66 | 302 Stainless Steel | 1 | 00000000 | 00000 |
| 0.094" | 0.012" | 0.95" | 0.1 | 1 | 2 | 316 Stainless Steel | 3 | 0000000 | 00000 |
| 0.094" | 0.016" | 0.725" | 0.19 | 2.26 | 9.2 | 316 Stainless Steel | 3 | 0000000 | 00000 |
| 0.109" | 0.012" | 1.151" | 0.09 | 0.92 | 1.27 | 316 Stainless Steel | 3 | 0000000 | 00000 |
| 0.109" | 0.014" | 0.963" | 0.13 | 1.46 | 2.88 | 316 Stainless Steel | 3 | 000000 | 00000 |
| 0.125" | 0.013" | 0.83" | 0.08 | 0.67 | 1.517 | 302 Stainless Steel | 1 | 00000000 | 0000 |
| 0.172" | 0.016" | 0.85" | 0.1 | 0.85 | 1.834 | 302 Stainless Steel | 1 | 00000000 | 0000 |
| 0.172" | 0.02" | 0.72" | 0.3 | 1.7 | 5.809 | 302 Stainless Steel | 1 | 00000000 | 0000 |
| 0.172" | 0.032" | 0.7" | 2 | 7.2 | 480 | 302 Stainless Steel | 1 | 00000000 | 0000 |
| 0.188" | 0.015" | 1.28" | 0.06 | 0.64 | 0.74 | 302 Stainless Steel | 1 | 00000000 | 0000 |
| 0.188" | 0.02" | 1.04" | 0.2 | 1.5 | 2.96 | 302 Stainless Steel | 1 | 00000000 | 0000 |
| 0.188" | 0.022" | 0.75" | 0.25 | 0.88 | 8.7 | 316 Stainless Steel | 2 | 00000000 | 0000 |
| 0.188" | 0.023" | 0.87" | 0.4 | 2.4 | 6.5 | 302 Stainless Steel | 1 | 00000000 | 0000 |
| 0.188" | 0.026" | 0.69" | 0.42 | 1.51 | 20.5 | 316 Stainless Steel | 2 | 00000000 | 0000 |
| 0.188" | 0.031" | 0.62" | 0.71 | 2.45 | 52 | 316 Stainless Steel | 2 | 00000000 | 0000 |
| 0.25" | 0.026" | 0.63" | 0.33 | 1.09 | 20.3 | 316 Stainless Steel | 2 | 00000000 | 0000 |