Mechanical Extension Springs are coiled products, in a variety of materials and forms. Extension springs are attached to two components from both ends of the spring, and when the components pull apart, the spring tries to pull the components together again. Extension Springs are wound to oppose extension.
Dependant on the application's load requirements, the springs initial tension can be manipulated. They are often tightly wound in the no-load position and have hooks, eyes, or spring anchors at the ends to attach to the components. Each spring is designed within proper stress levels and manufacturing limits.
| Items |
 M00630070310 Extension Spring - Music Wire |
M00630070380 Extension Spring - Music Wire |
M00630070440 Extension Spring - Music Wire |
M00630070500 Extension Spring - Music Wire |
M00630080250 Extension Spring - Music Wire |
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| Weight | 0.000040 Pound | 0.000049 Pound | 0.000056 Pound | 0.000064 Pound | 0.000036 Pound | |||||
| Material | ASTM-A228 or AMS-5112, Music Wire | |||||||||
| Height | 0.31 Inch | 0.38 Inch | 0.44 Inch | 0.500 Inch | 0.25 Inch | |||||
| Depth | 0.063 Inch | |||||||||
| Width | 0.063 Inch | |||||||||
| Outside Dia (In.) | 0.063 Inch | |||||||||
| Wire Dia (In.) | 0.007 Inch | 0.007 Inch | 0.007 Inch | 0.007 Inch | 0.008 Inch | |||||
| Free Length (In.) | 0.31 Inch | 0.38 Inch | 0.44 Inch | 0.50 Inch | 0.25 Inch | |||||
| Spring Rate (lbs./In.) | 0.7 lbs/in | 0.5 lbs/in | 0.4 lbs/in | 0.4 lbs/in | 2.0 lbs/in | |||||
| Initial Tension (lbs) | 0.03 Pound | 0.03 Pound | 0.03 Pound | 0.03 Pound | 0.04 Pound | |||||
| Ends | Full Twist Loop | |||||||||
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