Thread Size Thread Size |
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Length Length |
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Spring Type Spring Type |
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 | Extension |
Extended Length @ Maximum Load Extended Length@ Maximum Load |
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Material Material |
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Finish Finish | Show |
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Finish Finish | Hide |
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OD OD |
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Wire Diameter Wire Diameter |
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Load Load |
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Spring Rate Spring Rate |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Anchor Type Anchor Type |
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 | Stud |
About Washers
More
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.
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. | |
0.625" Lg. | |||||||||
| 0.094" | 0.012" | 1.255" | 0.13 | 1.02 | 1.44 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 000000 |
1" Lg. | |||||||||
| 0.125" | 0.016" | 2" | 0.22 | 1.74 | 1.47 | Black-Oxide Music-Wire Steel | 6 | 000000 | 00000 |
| 0.188" | 0.022" | 2" | 0.5 | 2.88 | 2.38 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 0000 |
| 0.25" | 0.026" | 2" | 0.4 | 3.41 | 2.66 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
| 0.25" | 0.037" | 1.5" | 1.06 | 9.41 | 16.89 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
| 0.375" | 0.041" | 1.5" | 1 | 8.35 | 12.11 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
| 0.375" | 0.045" | 1.5" | 0.92 | 10.99 | 19.3 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
1.25" Lg. | |||||||||
| 0.375" | 0.055" | 1.75" | 3.2 | 19.29 | 33.45 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
1.375" Lg. | |||||||||
| 0.25" | 0.026" | 3.005" | 0.4 | 3.41 | 1.65 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
| 0.5" | 0.06" | 2.005" | 3 | 18.63 | 24.3 | Black-Oxide Music-Wire Steel | 6 | 000000 | 00000 |
1.5" Lg. | |||||||||
| 0.25" | 0.031" | 3.5" | 0.77 | 5.72 | 3.61 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
| 0.375" | 0.031" | 4" | 0.42 | 3.68 | 1.21 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
| 0.375" | 0.037" | 3.5" | 0.59 | 6.17 | 3.03 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
1.75" Lg. | |||||||||
| 0.25" | 0.037" | 3" | 1.36 | 9.41 | 7.6 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
| 0.375" | 0.041" | 3.5" | 0.8 | 8.35 | 4.04 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
| 0.5" | 0.041" | 4.75" | 0.4 | 6.08 | 2.1 | Black-Oxide Music-Wire Steel | 6 | 000000 | 00000 |
2" Lg. | |||||||||
| 0.25" | 0.026" | 5" | 0.46 | 3.41 | 0.97 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
| 0.625" | 0.069" | 3.5" | 2.8 | 21.9 | 13.79 | Black-Oxide Music-Wire Steel | 3 | 0000000 | 0000 |
| 0.75" | 0.075" | 3.5" | 2.5 | 22.87 | 15.41 | Black-Oxide Music-Wire Steel | 3 | 00000000 | 0000 |
2.25" Lg. | |||||||||
| 0.375" | 0.055" | 3.5" | 3.92 | 19.31 | 13.38 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
| 0.5" | 0.055" | 4.5" | 1.27 | 14.41 | 5.85 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
2.5" Lg. | |||||||||
| 0.375" | 0.041" | 6" | 1.19 | 8.35 | 2.4 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
| 0.5" | 0.045" | 5.5" | 0.73 | 7.99 | 1.74 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
| 0.5" | 0.063" | 4.5" | 2.7 | 21.38 | 10.24 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
3" Lg. | |||||||||
| 0.25" | 0.037" | 5" | 1.16 | 9.41 | 3.95 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
| 0.375" | 0.045" | 6" | 1.1 | 11 | 3.1 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
| 0.625" | 0.063" | 6.5" | 2 | 16.74 | 4.18 | Black-Oxide Music-Wire Steel | 3 | 0000000 | 0000 |
| 0.625" | 0.069" | 6" | 3.7 | 21.93 | 6.77 | Black-Oxide Music-Wire Steel | 3 | 00000000 | 0000 |
| 0.75" | 0.075" | 6" | 2.5 | 22.87 | 6.16 | Black-Oxide Music-Wire Steel | 3 | 00000000 | 00000 |
4.5" Lg. | |||||||||
| 0.625" | 0.069" | 9" | 2.8 | 21.91 | 3.79 | Black-Oxide Music-Wire Steel | 3 | 00000000 | 00000 |
5" Lg. | |||||||||
| 0.5" | 0.063" | 9" | 3 | 21.36 | 4.08 | Black-Oxide Music-Wire Steel | 6 | 0000000 | 00000 |
| 0.75" | 0.075" | 11" | 2.6 | 22.85 | 2.98 | Black-Oxide Music-Wire Steel | 3 | 00000000 | 00000 |
Extension Spring Stud Anchors
A black-oxide finish provides these steel anchors with mild corrosion resistance. Attach an extension spring to a stud and then thread the stud into your part for a secure connection.
For technical drawings and 3-D models, click on a part number.
Thread | |||||||
|---|---|---|---|---|---|---|---|
| Size | Min. Lg. | Lg. | Dia. | Hole Dia. | Material | Each | |
| 6-32 | 3/8" | 5/8" | 0.138" | 0.08" | Black-Oxide Steel | 0000000 | 00000 |
| 6-40 | 5/8" | 5/8" | 0.138" | 0.08" | Black-Oxide Steel | 0000000 | 0000 |
| 8-32 | 5/8" | 7/8" | 0.164" | 0.1" | Black-Oxide Steel | 0000000 | 0000 |
| 8-36 | 5/8" | 7/8" | 0.164" | 0.1" | Black-Oxide Steel | 0000000 | 0000 |
| 10-24 | 3/4" | 1 1/8" | 0.19" | 0.12" | Black-Oxide Steel | 0000000 | 0000 |
| 10-32 | 3/4" | 1 1/8" | 0.19" | 0.12" | Black-Oxide Steel | 0000000 | 0000 |
| 1/4"-20 | 7/8" | 1 1/4" | 1/4" | 0.15" | Black-Oxide Steel | 0000000 | 0000 |
| 1/4"-20 | 7/8" | 1 1/4" | 1/4" | 0.268" | Black-Oxide Steel | 0000000 | 0000 |
| 1/4"-28 | 7/8" | 1 1/4" | 1/4" | 0.15" | Black-Oxide Steel | 0000000 | 0000 |
| 3/8"-16 | 1 1/8" | 1 5/8" | 3/8" | 0.22" | Black-Oxide Steel | 0000000 | 0000 |
| 3/8"-16 | 1 1/8" | 1 5/8" | 3/8" | 0.268" | Black-Oxide Steel | 0000000 | 0000 |
| 3/8"-24 | 1 1/8" | 1 5/8" | 3/8" | 0.22" | Black-Oxide Steel | 0000000 | 0000 |
Thread | ||||||||
|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Min. Lg., mm | Lg., mm | Dia., mm | Hole Dia., mm | Material | Each | |
| M3.5 | 0.6 | 10 | 16 | 3.5 | 2 | Black-Oxide Steel | 0000000 | 00000 |
| M4 | 0.7 | 16 | 22 | 4 | 2.5 | Black-Oxide Steel | 0000000 | 0000 |
| M5 | 0.8 | 19 | 28 | 5 | 3 | Black-Oxide Steel | 0000000 | 0000 |
| M6 | 1 | 22 | 32 | 6 | 4 | Black-Oxide Steel | 0000000 | 0000 |
| M8 | 1.25 | 25 | 38 | 8 | 5 | Black-Oxide Steel | 0000000 | 0000 |
| M10 | 1.5 | 28 | 41 | 10 | 6 | Black-Oxide Steel | 0000000 | 0000 |
Swiveling Extension Spring Stud Anchors
A black-oxide finish provides these steel anchors with mild corrosion resistance. The head swivels 360° so the spring stays straight and properly coiled. Attach an extension spring to a stud and then thread the stud into your part for a secure connection. To make tightening easier, anchors have a hex socket on the bottom and wrench flats at the top of the threads.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||||
|---|---|---|---|---|---|---|---|---|
| Size | Min. Lg. | Lg. | Dia. | Hole Dia. | Hex Size | Material | Each | |
| 6-32 | 3/8" | 5/8" | 0.138" | 0.08" | 0.035" | Black-Oxide Steel | 000000000 | 000000 |
| 8-32 | 5/8" | 7/8" | 0.164" | 0.1" | 0.05" | Black-Oxide Steel | 000000000 | 00000 |
| 10-24 | 3/4" | 1 1/8" | 1/4" | 0.12" | 0.05" | Black-Oxide Steel | 000000000 | 00000 |
| 10-32 | 3/4" | 1 1/8" | 1/4" | 0.12" | 1/16" | Black-Oxide Steel | 000000000 | 00000 |
| 1/4"-20 | 7/8" | 1 1/4" | 1/4" | 0.15" | 5/64" | Black-Oxide Steel | 000000000 | 00000 |
| 1/4"-28 | 7/8" | 1 1/4" | 1/4" | 0.15" | 5/64" | Black-Oxide Steel | 000000000 | 00000 |
| 3/8"-16 | 1 1/8" | 1 5/8" | 3/8" | 0.22" | 1/8" | Black-Oxide Steel | 000000000 | 00000 |
| 3/8"-24 | 1 1/8" | 1 5/8" | 3/8" | 0.22" | 1/8" | Black-Oxide Steel | 000000000 | 00000 |
Thread | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Size | Pitch, mm | Min. Lg., mm | Lg., mm | Dia., mm | Hole Dia., mm | Hex Size, mm | Material | Each | |
| M3.5 | 0.6 | 10 | 16 | 3.5 | 2 | 0.9 | Black-Oxide Steel | 000000000 | 000000 |
| M4 | 0.7 | 16 | 22 | 4 | 2.5 | 1.3 | Black-Oxide Steel | 000000000 | 00000 |
| M5 | 0.8 | 19 | 28 | 5 | 3 | 1.5 | Black-Oxide Steel | 000000000 | 00000 |
| M6 | 1 | 22 | 32 | 6 | 4 | 2 | Black-Oxide Steel | 000000000 | 00000 |
| M8 | 1.25 | 25 | 38 | 8 | 5 | 2.5 | Black-Oxide Steel | 000000000 | 00000 |
| M10 | 1.5 | 28 | 41 | 10 | 6 | 3 | Black-Oxide Steel | 000000000 | 00000 |
Die Spring Screw Caps
In addition to providing a backing for springs, these screw caps can also be used to control spring tension. Install them by drilling and tapping a hole through your die set.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Hex Wd. | Thick. | Material | Each | |
| 7/16"-20 | 3/16" | 1/4" | Black-Oxide Steel | 0000000 | 00000 |
| 1/2"-20 | 1/4" | 5/16" | Black-Oxide Steel | 0000000 | 0000 |
| 9/16"-18 | 1/4" | 5/16" | Black-Oxide Steel | 0000000 | 0000 |
| 5/8"-18 | 1/4" | 5/16" | Black-Oxide Steel | 0000000 | 0000 |
| 3/4"-16 | 1/4" | 5/16" | Black-Oxide Steel | 00000000 | 0000 |
| 7/8"-14 | 1/4" | 5/16" | Black-Oxide Steel | 00000000 | 0000 |
| 1"-14 | 1/4" | 5/16" | Black-Oxide Steel | 00000000 | 0000 |
| 1 1/8"-12 | 1/4" | 5/16" | Black-Oxide Steel | 00000000 | 0000 |
| 1 1/4"-12 | 1/4" | 5/16" | Black-Oxide Steel | 00000000 | 0000 |
| 1 3/8"-12 | 1/2" | 1/2" | Black-Oxide Steel | 00000000 | 00000 |
Triple-Wave Washers
With three points of surface contact, these washers provide more stability than single-wave washers. They are curved and flexible to act like springs, compensating for tolerance variations and uneven surfaces. You can also use them to damp vibration.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Overall Ht. | Hardness | Pkg. Qty. | Pkg. | |
Black-Oxide 18-8 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| No. 2 | 0.100" | 0.171" | 0.010" | 0.040" | Rockwell C40 | 10 | 000000000 | 000000 |
| No. 4 | 0.130" | 0.255" | 0.005" | 0.025" | Rockwell C40 | 10 | 000000000 | 00000 |
| No. 6 | 0.150" | 0.245" | 0.006" | 0.050" | Rockwell C40 | 10 | 000000000 | 00000 |
| No. 8 | 0.200" | 0.250" | 0.006" | 0.055" | Rockwell C40 | 10 | 000000000 | 00000 |
| No. 10 | 0.208" | 0.385" | 0.005" | 0.041" | Rockwell C40 | 10 | 000000000 | 00000 |
Single-Wave Washers
These curved, flexible washers act like springs to compensate for tolerance variations and uneven surfaces. You can also use them to damp vibration.
18-8 stainless steel washers have good chemical resistance and may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Overall Ht. | Hardness | Pkg. Qty. | Pkg. | |
Black-Oxide 18-8 Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| No. 0 | 0.072" | 0.170" | 0.010" | 0.050" | Rockwell C40 | 10 | 000000000 | 000000 |
| No. 4 | 0.121" | 0.240" | 0.008" | 0.056" | Rockwell C40 | 10 | 000000000 | 00000 |
| No. 5 | 0.135" | 0.245" | 0.004" | 0.055" | Rockwell C40 | 10 | 000000000 | 00000 |
| No. 8 | 0.165" | 0.285" | 0.006" | 0.053" | Rockwell C40 | 10 | 000000000 | 00000 |
| No. 10 | 0.200" | 0.300" | 0.010" | 0.061" | Rockwell C40 | 10 | 000000000 | 00000 |
| 1/4" | 0.260" | 0.485" | 0.010" | 0.070" | Rockwell C40 | 10 | 000000000 | 00000 |
Metric Single-Wave Washers
These curved, flexible washers act like springs to compensate for tolerance variations and uneven surfaces. You can also use them to damp vibration.
Steel washers are harder and hold their shape better than stainless steel washers, but aren’t as corrosion resistant. They have a black finish from heat treatment.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID, mm | OD, mm | Thick., mm | Overall Ht., mm | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Black-Oxide Steel | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| M3 | 3.2 | 8.0 | 0.5 | 1.6 | Rockwell C42 | DIN 137B | 100 | 000000000 | 00000 |
| M4 | 4.3 | 9.0 | 0.5 | 2.0 | Rockwell C42 | DIN 137B | 100 | 000000000 | 0000 |
| M5 | 5.3 | 11.0 | 0.5 | 2.2 | Rockwell C42 | DIN 137B | 100 | 000000000 | 0000 |
| M6 | 6.4 | 12.0 | 0.5 | 2.6 | Rockwell C42 | DIN 137B | 100 | 000000000 | 0000 |
| M7 | 7.4 | 14.0 | 0.8 | 3.0 | Rockwell C42 | DIN 137B | 100 | 000000000 | 00000 |
| M8 | 8.4 | 15.0 | 0.8 | 3.0 | Rockwell C42 | DIN 137B | 100 | 000000000 | 00000 |
| M10 | 10.5 | 21.0 | 1.0 | 4.2 | Rockwell C42 | DIN 137B | 100 | 000000000 | 00000 |
| M12 | 13.0 | 24.0 | 1.2 | 5.0 | Rockwell C42 | DIN 137B | 25 | 000000000 | 0000 |
| M14 | 15.0 | 28.0 | 1.6 | 6.0 | Rockwell C42 | DIN 137B | 25 | 000000000 | 00000 |
| M16 | 17.0 | 30.0 | 1.6 | 6.4 | Rockwell C42 | DIN 137B | 25 | 000000000 | 00000 |
| M20 | 21.0 | 36.0 | 1.6 | 7.4 | Rockwell C42 | DIN 137B | 10 | 000000000 | 0000 |
| M24 | 25.0 | 44.0 | 1.8 | 8.2 | Rockwell C42 | DIN 137B | 5 | 000000000 | 00000 |
Belleville Spring Lock Washers
Also known as conical washers, these have a slightly cupped shape that gives them spring-like flexibility to grip tighter than split and tooth lock washers. They minimize loosening from wear, temperature changes, and vibration. Load-rated Belleville disc springs are also available.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Overall Ht. | Hardness | Pkg. Qty. | Pkg. | |
Black-Oxide Stainless Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| M3 | 3.200mm | 8.000mm | 0.500mm | 0.700mm | Rockwell C38 | 10 | 000000000 | 00000 |
| M4 | 4.200mm | 10.000mm | 0.500mm | 0.750mm | Rockwell C38 | 10 | 000000000 | 0000 |
| M5 | 5.200mm | 10.000mm | 0.500mm | 0.750mm | Rockwell C38 | 10 | 000000000 | 0000 |
| M6 | 6.200mm | 12.000mm | 0.500mm | 0.850mm | Rockwell C38 | 10 | 000000000 | 0000 |
| M7 | 7.200mm | 14.000mm | 0.500mm | 0.900mm | Rockwell C38 | 5 | 000000000 | 0000 |
| M8 | 8.200mm | 16.000mm | 0.600mm | 1.050mm | Rockwell C38 | 5 | 000000000 | 0000 |
Vibration-Resistant Slotted Spring Pins
Interlocking teeth help these pins resist sliding when exposed to vibration. Also known as roll, tension, split, and expansion pins, they have a slot that presses closed when the pins are inserted so they don't flex after installation. Use them for fastening, pivoting, and holding.
Squeeze pins closed and install them in a hole. Tension holds them tight against the hole wall. The ends are chamfered to aid insertion.
Breaking strength is measured as double shear, which is the force required to break a pin into three pieces.
Pins are made of vanadium steel for excellent wear resistance.
For technical drawings and 3-D models, click on a part number.
| Lg. | For Hole Dia. | Wall Thick. | Min. Hardness | Breaking Strength, lbs. | Passivation | Each | |
Black-Oxide 6150 Vanadium Steel | |||||||
|---|---|---|---|---|---|---|---|
1/2" Dia. | |||||||
| 2" | 0.5"-0.501" | 0.09" | Rockwell C42 | 8,800 | Not Passivated | 000000000 | 00000 |
| 3" | 0.5"-0.501" | 0.09" | Rockwell C42 | 8,800 | Not Passivated | 000000000 | 0000 |
5/8" Dia. | |||||||
| 2" | 0.625"-0.626" | 0.115" | Rockwell C42 | 13,800 | Not Passivated | 000000000 | 00000 |
| 3 1/2" | 0.625"-0.626" | 0.115" | Rockwell C42 | 13,800 | Not Passivated | 000000000 | 00000 |
| 4" | 0.625"-0.626" | 0.115" | Rockwell C42 | 13,800 | Not Passivated | 000000000 | 00000 |
| 5" | 0.625"-0.626" | 0.115" | Rockwell C42 | 13,800 | Not Passivated | 000000000 | 00000 |
3/4" Dia. | |||||||
| 2" | 0.75"-0.751" | 0.144" | Rockwell C42 | 20,000 | Not Passivated | 000000000 | 00000 |
| 3" | 0.75"-0.751" | 0.144" | Rockwell C42 | 20,000 | Not Passivated | 000000000 | 00000 |
| 4" | 0.75"-0.751" | 0.144" | Rockwell C42 | 20,000 | Not Passivated | 000000000 | 00000 |
| 5" | 0.75"-0.751" | 0.144" | Rockwell C42 | 20,000 | Not Passivated | 000000000 | 00000 |
| 6" | 0.75"-0.751" | 0.144" | Rockwell C42 | 20,000 | Not Passivated | 000000000 | 00000 |
1" Dia. | |||||||
| 4" | 1"-1.001" | 0.188" | Rockwell C42 | 35,000 | Not Passivated | 000000000 | 00000 |
| 5" | 1"-1.001" | 0.188" | Rockwell C42 | 35,000 | Not Passivated | 000000000 | 00000 |
| 6" | 1"-1.001" | 0.188" | Rockwell C42 | 35,000 | Not Passivated | 000000000 | 00000 |
1 1/4" Dia. | |||||||
| 4" | 1.25"-1.252" | 0.23" | Rockwell C42 | 53,500 | Not Passivated | 000000000 | 00000 |
| 5" | 1.25"-1.252" | 0.23" | Rockwell C42 | 53,500 | Not Passivated | 000000000 | 00000 |
| 6" | 1.25"-1.252" | 0.23" | Rockwell C42 | 53,500 | Not Passivated | 000000000 | 00000 |