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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. | |
12" Lg. | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 0.184" | 0.138" | 0.023" | 3.33" | 5.8 | 0.66 | Galvanized Spring-Tempered Steel | Open | 3 | 00000000 | 000000 |
| 0.206" | 0.154" | 0.026" | 3.45" | 7.28 | 0.82 | Galvanized Spring-Tempered Steel | Open | 3 | 00000000 | 00000 |
| 0.229" | 0.171" | 0.029" | 3.85" | 7.84 | 0.9 | Galvanized Spring-Tempered Steel | Open | 3 | 00000000 | 00000 |
| 0.254" | 0.19" | 0.032" | 3.59" | 10.57 | 1.19 | Galvanized Spring-Tempered Steel | Open | 3 | 00000000 | 00000 |
| 0.278" | 0.208" | 0.035" | 4.02" | 10.51 | 1.28 | Galvanized Spring-Tempered Steel | Open | 3 | 00000000 | 00000 |
| 0.328" | 0.246" | 0.041" | 3.97" | 14.36 | 1.78 | Galvanized Spring-Tempered Steel | Open | 3 | 00000000 | 00000 |
| 0.375" | 0.293" | 0.041" | 2.99" | 13.63 | 1.51 | Galvanized Spring-Tempered Steel | Open | 3 | 00000000 | 0000 |
| 0.38" | 0.284" | 0.048" | 4.08" | 19.66 | 2.36 | Galvanized Spring-Tempered Steel | Open | 3 | 00000000 | 00000 |
| 0.432" | 0.324" | 0.054" | 4.26" | 22.44 | 2.9 | Galvanized Spring-Tempered Steel | Open | 3 | 00000000 | 0000 |
| 0.5" | 0.374" | 0.063" | 3.84" | 36.89 | 4.36 | Galvanized Spring-Tempered Steel | Open | 3 | 00000000 | 0000 |
| 0.576" | 0.432" | 0.072" | 3.96" | 44.92 | 5.58 | Galvanized Spring-Tempered Steel | Open | 3 | 00000000 | 0000 |
| 0.64" | 0.48" | 0.08" | 4.16" | 51.54 | 6.57 | Galvanized Spring-Tempered Steel | Open | 3 | 00000000 | 0000 |
| 0.732" | 0.548" | 0.092" | 4.23" | 67.81 | 8.52 | Galvanized Spring-Tempered Steel | Open | 3 | 00000000 | 00000 |
| 0.844" | 0.632" | 0.106" | 4.24" | 89.83 | 11.33 | Galvanized Spring-Tempered Steel | Open | 3 | 00000000 | 00000 |
| 0.964" | 0.722" | 0.121" | 4.625" | 36.81 | 14.02 | Galvanized Spring-Tempered Steel | Open | 3 | 00000000 | 00000 |
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. | |
1.75" Lg. | |||||||||
| 0.75" | 0.105" | 2.04" | 12.8 | 44.3 | 108.52 | Galvanized Spring-Tempered Steel | 6 | 000000 | 00000 |
3" Lg. | |||||||||
| 0.75" | 0.105" | 3.822" | 12.8 | 44.3 | 38.3 | Galvanized Spring-Tempered Steel | 6 | 0000000 | 0000 |
3.438" Lg. | |||||||||
| 0.75" | 0.105" | 4.454" | 12.8 | 44.3 | 31 | Galvanized Spring-Tempered Steel | 6 | 0000000 | 0000 |
3.813" Lg. | |||||||||
| 0.75" | 0.105" | 4.975" | 12.8 | 44.3 | 27.13 | Galvanized Spring-Tempered Steel | 6 | 0000000 | 00000 |
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. | |
Straight Cut | |||||||||||
| A | 12" | 0.13" | 0.016" | 23.73" | 0.24 | 1.3 | 0.09 | Galvanized Spring-Tempered Steel | 3 | 0000000 | 000000 |
| A | 12" | 0.141" | 0.018" | 22.66" | 0.31 | 1.65 | 0.13 | Galvanized Spring-Tempered Steel | 3 | 0000000 | 00000 |
| A | 12" | 0.16" | 0.02" | 22.97" | 0.39 | 2.1 | 0.16 | Galvanized Spring-Tempered Steel | 3 | 0000000 | 00000 |
| A | 12" | 0.184" | 0.023" | 23.47" | 0.48 | 2.6 | 0.19 | Galvanized Spring-Tempered Steel | 3 | 0000000 | 00000 |
| A | 12" | 0.206" | 0.026" | 22.86" | 0.6 | 3.15 | 0.24 | Galvanized Spring-Tempered Steel | 3 | 0000000 | 00000 |
| A | 12" | 0.229" | 0.029" | 22.91" | 0.74 | 3.85 | 0.41 | Galvanized Spring-Tempered Steel | 3 | 0000000 | 00000 |
| A | 12" | 0.25" | 0.032" | 22.6" | 0.93 | 4.85 | 0.37 | Galvanized Spring-Tempered Steel | 3 | 0000000 | 00000 |
| A | 12" | 0.328" | 0.041" | 22.58" | 1.51 | 7.75 | 0.59 | Galvanized Spring-Tempered Steel | 3 | 0000000 | 00000 |
| A | 12" | 0.375" | 0.048" | 21.56" | 2.09 | 10 | 0.83 | Galvanized Spring-Tempered Steel | 3 | 00000000 | 00000 |
| A | 12" | 0.437" | 0.054" | 21.84" | 2.57 | 12.25 | 0.98 | Galvanized Spring-Tempered Steel | 3 | 00000000 | 00000 |
| A | 12" | 0.5" | 0.063" | 21.46" | 3.52 | 16.5 | 1.37 | Galvanized Spring-Tempered Steel | 3 | 00000000 | 00000 |
| A | 12" | 0.964" | 0.121" | 20.33" | 13.09 | 55.75 | 5.12 | Galvanized Spring-Tempered Steel | 3 | 00000000 | 00000 |
Elongated Hook | |||||||||||
| D | 2 3/8" | 0.281" | 0.047" | 2.765" | 3.44 | 11.75 | 21.32 | Galvanized Spring-Tempered Steel | 6 | 00000000 | 00000 |
| D | 2 1/2" | 0.313" | 0.023" | 5.52" | 0.15 | 1.2 | 0.34 | Galvanized Spring-Tempered Steel | 6 | 00000000 | 00000 |
| D | 3 1/2" | 0.25" | 0.041" | 4.04" | 2.61 | 8.35 | 10.67 | Galvanized Spring-Tempered Steel | 6 | 00000000 | 00000 |
| D | 3 3/4" | 0.563" | 0.072" | 4.21" | 4.13 | 17.6 | 29.44 | Galvanized Spring-Tempered Steel | 3 | 00000000 | 00000 |
| D | 4" | 0.25" | 0.035" | 4.49" | 1.42 | 5.26 | 7.87 | Galvanized Spring-Tempered Steel | 6 | 00000000 | 00000 |
| D | 5 1/4" | 0.5" | 0.08" | 5.94" | 9.51 | 27.74 | 26.27 | Galvanized Spring-Tempered Steel | 3 | 00000000 | 00000 |
| D | 5 5/8" | 0.719" | 0.047" | 14.625" | 0.48 | 4.59 | 0.46 | Galvanized Spring-Tempered Steel | 10 | 0000000 | 00000 |
| D | 5 3/4" | 0.375" | 0.054" | 7.932" | 3.5 | 13.44 | 4.69 | Galvanized Spring-Tempered Steel | 1 | 00000000 | 0000 |
| D | 5 3/4" | 0.437" | 0.054" | 9.022" | 2.64 | 11.36 | 2.72 | Galvanized Spring-Tempered Steel | 1 | 00000000 | 0000 |
| D | 5 3/4" | 0.5" | 0.062" | 8.442" | 3.52 | 14.68 | 4.25 | Galvanized Spring-Tempered Steel | 1 | 00000000 | 0000 |
| D | 6" | 0.25" | 0.041" | 7.802" | 2.54 | 9.36 | 3.93 | Galvanized Spring-Tempered Steel | 1 | 00000000 | 0000 |
| D | 8 1/4" | 0.438" | 0.063" | 10.25" | 2.57 | 12.08 | 6.04 | Galvanized Spring-Tempered Steel | 10 | 0000000 | 00000 |
| D | 8 1/2" | 0.468" | 0.054" | 10.08" | 2.31 | 10.36 | 5.22 | Galvanized Spring-Tempered Steel | 1 | 00000000 | 0000 |
| D | 10 1/4" | 0.75" | 0.091" | 12.24" | 7.31 | 25.64 | 9.19 | Galvanized Spring-Tempered Steel | 3 | 0000000 | 00000 |
Elongated Hook and Loop | |||||||||||
| E | 1 5/8" | 0.25" | 0.039" | 1.895" | 1.95 | 7.29 | 19.42 | Galvanized Spring-Tempered Steel | 6 | 00000000 | 00000 |
| E | 2" | 0.313" | 0.041" | 2.54" | 1.73 | 6.43 | 8.7 | Galvanized Spring-Tempered Steel | 6 | 00000000 | 00000 |
| E | 5" | 0.563" | 0.072" | 6.29" | 5.08 | 17.6 | 9.73 | Galvanized Spring-Tempered Steel | 3 | 00000000 | 00000 |
| E | 5 1/2" | 0.375" | 0.062" | 6.31" | 6.06 | 17.94 | 14.62 | Galvanized Spring-Tempered Steel | 3 | 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 |
| F | 17 1/2" | 0.75" | 0.063" | 23" | 2.69 | 14.35 | 2.61 | Galvanized Spring-Tempered Steel | 5 | 0000000 | 00000 |
| F | 18 1/2" | 0.813" | 0.094" | 20" | 10.62 | 40.09 | 26.73 | Galvanized Spring-Tempered Steel | 5 | 0000000 | 00000 |
Split Lock Washers
As a screw is tightened, these washers flatten to add tension to the joint, counteracting fatigue around the joint from small amounts of vibration. This makes them a common choice to prevent fasteners from loosening. However, they resist the least amount of vibration compared to other locking washers.
These washers are compatible with fasteners that have right-hand threads to prevent clockwise rotation. The uneven split ends bite into fasteners for a tight grip, but they won’t work with hardened surfaces. These washers hold better than curved or wave washers. They are not reusable after tightening.
Hot-dipped galvanized steel washers are 10 times as corrosion resistant as zinc- and zinc yellow-chromate plated washers.
Washers that meet ASME B18.21.1 adhere to strict dimensional standards.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Hot-Dipped Galvanized Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4" | 0.260" | 0.487" | 0.062" | Rockwell C38 | ASME B18.21.1 | 100 | 000000000 | 00000 |
| 5/16" | 0.322" | 0.583" | 0.078" | Rockwell C38 | ASME B18.21.1 | 100 | 000000000 | 0000 |
| 3/8" | 0.385" | 0.680" | 0.094" | Rockwell C38 | ASME B18.21.1 | 100 | 000000000 | 00000 |
| 7/16" | 0.450" | 0.776" | 0.109" | Rockwell C38 | ASME B18.21.1 | 25 | 000000000 | 0000 |
| 1/2" | 0.512" | 0.869" | 0.125" | Rockwell C38 | ASME B18.21.1 | 50 | 000000000 | 00000 |
| 5/8" | 0.641" | 1.073" | 0.156" | Rockwell C38 | ASME B18.21.1 | 25 | 000000000 | 00000 |
| 3/4" | 0.766" | 1.265" | 0.188" | Rockwell C38 | ASME B18.21.1 | 25 | 000000000 | 00000 |
| 7/8" | 0.894" | 1.459" | 0.219" | Rockwell C38 | ASME B18.21.1 | 10 | 000000000 | 00000 |
| 1" | 1.024" | 1.656" | 0.250" | Rockwell C38 | ASME B18.21.1 | 10 | 000000000 | 00000 |
| 1 1/4" | 1.280" | 2.036" | 0.312" | Rockwell C38 | ASME B18.21.1 | 5 | 000000000 | 00000 |
Coil Lock Washers
Keep tension when fastening materials prone to expanding and contracting, such as wood. The coil of these washers prevents nuts and bolts from loosening. They have a hot-dipped galvanized finish for 10 times the corrosion resistance of zinc-plated steel washers.
For technical drawings and 3-D models, click on a part number.
| For Screw Size | ID | OD | Thick. | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Hot-Dipped Galvanized Steel | ||||||||
|---|---|---|---|---|---|---|---|---|
| 3/8" | 0.381" | 0.680" | 0.094" | Rockwell C38 | ASME B18.21.1 | 5 | 000000000 | 00000 |
| 1/2" | 0.507" | 0.869" | 0.125" | Rockwell C38 | ASME B18.21.1 | 1 | 000000000 | 0000 |
| 5/8" | 0.634" | 1.073" | 0.156" | Rockwell C38 | ASME B18.21.1 | 1 | 000000000 | 0000 |
| 3/4" | 0.759" | 1.265" | 0.188" | Rockwell C38 | ASME B18.21.1 | 1 | 000000000 | 0000 |