Extension Spring - Music Wire

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.

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Outside Dia (In.) (Inch)

Wire Dia (In.) (Inch)

Free Length (In.) (Inch)

Spring Rate (lbs./In.) (lbs/in)

Item #	IntegrationID	Height	Depth	Width	Outside Dia (In.)	Wire Dia (In.)	Free Length (In.)	Spring Rate (lbs./In.)	Initial Tension (lbs)	Ends

M17501485000	N/A 206624	N/A 5.00 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.148 Inch	N/A 5.00 Inch	N/A 15.0 lbs/in	N/A 5.79 Pound	N/A Full Twist Loop
M17501485500	N/A 206625	N/A 5.50 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.148 Inch	N/A 5.50 Inch	N/A 11.5 lbs/in	N/A 5.79 Pound	N/A Full Twist Loop
M17501486000	N/A 206626	N/A 6.00 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.148 Inch	N/A 6.00 Inch	N/A 9.4 lbs/in	N/A 5.79 Pound	N/A Full Twist Loop
M17501486500	N/A 206627	N/A 6.50 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.148 Inch	N/A 6.50 Inch	N/A 7.9 lbs/in	N/A 5.79 Pound	N/A Full Twist Loop
M17501487000	N/A 206628	N/A 7.00 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.148 Inch	N/A 7.00 Inch	N/A 6.8 lbs/in	N/A 5.79 Pound	N/A Full Twist Loop
M17501487500	N/A 206629	N/A 7.50 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.148 Inch	N/A 7.50 Inch	N/A 6.0 lbs/in	N/A 5.79 Pound	N/A Full Twist Loop
M17501488000	N/A 206630	N/A 8.00 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.148 Inch	N/A 8.00 Inch	N/A 5.3 lbs/in	N/A 5.79 Pound	N/A Full Twist Loop
M17501489000	N/A 206631	N/A 9.00 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.148 Inch	N/A 9.00 Inch	N/A 4.4 lbs/in	N/A 5.79 Pound	N/A Full Twist Loop
M17501775000	N/A 206632	N/A 5.00 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.177 Inch	N/A 5.00 Inch	N/A 36.6 lbs/in	N/A 9.50 Pound	N/A Full Twist Loop
M17501775500	N/A 206633	N/A 5.50 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.177 Inch	N/A 5.50 Inch	N/A 28.5 lbs/in	N/A 9.50 Pound	N/A Full Twist Loop
M17501776000	N/A 206634	N/A 6.00 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.177 Inch	N/A 6.00 Inch	N/A 23.3 lbs/in	N/A 9.50 Pound	N/A Full Twist Loop
M17501776500	N/A 206635	N/A 6.50 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.177 Inch	N/A 6.50 Inch	N/A 19.7 lbs/in	N/A 9.50 Pound	N/A Full Twist Loop
M17501777000	N/A 206636	N/A 7.00 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.177 Inch	N/A 7.00 Inch	N/A 17.1 lbs/in	N/A 9.50 Pound	N/A Full Twist Loop
M17501777500	N/A 206637	N/A 7.50 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.177 Inch	N/A 7.50 Inch	N/A 15.1 lbs/in	N/A 9.50 Pound	N/A Full Twist Loop
M17501778000	N/A 206638	N/A 8.00 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.177 Inch	N/A 8.00 Inch	N/A 13.5 lbs/in	N/A 9.50 Pound	N/A Full Twist Loop
M17501779000	N/A 206639	N/A 9.00 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.177 Inch	N/A 9.00 Inch	N/A 11.2 lbs/in	N/A 9.50 Pound	N/A Full Twist Loop
M17502075000	N/A 206640	N/A 5.00 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.207 Inch	N/A 5.00 Inch	N/A 80.2 lbs/in	N/A 14.59 Pound	N/A Full Twist Loop
M17502075500	N/A 206641	N/A 5.50 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.207 Inch	N/A 5.50 Inch	N/A 63.2 lbs/in	N/A 14.59 Pound	N/A Full Twist Loop
M17502076000	N/A 206642	N/A 6.00 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.207 Inch	N/A 6.00 Inch	N/A 52.1 lbs/in	N/A 14.59 Pound	N/A Full Twist Loop
M17502076500	N/A 206643	N/A 6.50 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.207 Inch	N/A 6.50 Inch	N/A 44.3 lbs/in	N/A 14.59 Pound	N/A Full Twist Loop
M17502077000	N/A 206644	N/A 7.00 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.207 Inch	N/A 7.00 Inch	N/A 38.6 lbs/in	N/A 14.59 Pound	N/A Full Twist Loop
M17502077500	N/A 206645	N/A 7.50 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.207 Inch	N/A 7.50 Inch	N/A 34.2 lbs/in	N/A 14.59 Pound	N/A Full Twist Loop
M17502078000	N/A 206646	N/A 8.00 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.207 Inch	N/A 8.00 Inch	N/A 30.6 lbs/in	N/A 14.59 Pound	N/A Full Twist Loop
M17502079000	N/A 206647	N/A 9.00 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 1.750 Inch	N/A 0.207 Inch	N/A 9.00 Inch	N/A 25.4 lbs/in	N/A 14.59 Pound	N/A Full Twist Loop
M20001775500	N/A 206648	N/A 5.50 Inch	N/A 2.000 Inch	N/A 2.000 Inch	N/A 2.000 Inch	N/A 0.177 Inch	N/A 5.50 Inch	N/A 24.2 lbs/in	N/A 8.37 Pound	N/A Full Twist Loop

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No Preference
0.007
0.008
0.009
0.010
0.011
0.012
0.013
0.014
0.016
0.018
0.020
0.022
0.024
0.026
0.029
0.031
0.034
0.037
0.039
0.041
0.045
0.049
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0.058
0.063
0.069
0.075
0.085
0.095
0.105
0.115
0.125
0.135
0.148
0.177
0.207

No Preference
0.25
0.31
0.38
0.44
0.50
0.62
0.75
0.87
0.88
1.00
1.12
1.25
1.37
1.50
1.75
10.00
2.00
2.25
2.50
2.75
3.00
3.25
3.50
4.00
4.50
4.75
5.00
5.50
6.00
6.50
7.00
7.50
8.00
9.00

No Preference
0.1
0.138
0.2
0.24
0.3
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0.5
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0.7
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1.9
10.0
10.1
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10.4
10.5
10.6
10.7
10.8
10.9
100.2
102.7
107.7
11.0
11.1
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11.3
11.4
11.5
11.6
11.8
11.9
115.5
119.8
12.0
12.1
12.2
12.4
12.5
12.7
12.8
12.9
123.9
13.0
13.1
13.2
13.4
13.5
13.6
13.7
13.8
134.1
14.0
14.1
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14.9
143.8
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15.6
15.9
151.1
159.3
16.0
16.2
16.4
16.5
16.7
17.0
17.1
17.2
17.3
17.5
17.8
17.9
179.7
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18.2
18.3
18.7
18.9
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19.5
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19.7
19.8
2.0
2.1
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2.9
20.1
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20.7
20.8
202.8
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21.5
21.6
21.8
22.0
22.1
22.4
22.5
22.8
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23.5
23.8
23.9
239.6
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24.7
24.8
24.9
25.0
25.1
25.4
25.5
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26.5
26.9
27.1
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27.7
27.8
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28.7
28.9
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29.7
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3.7
3.8
3.9
30.2
30.3
30.6
30.7
31.0
31.2
31.3
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32.7
33.3
33.8
33.9
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34.2
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34.6
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35.1
35.3
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36.6
37.4
37.8
38.2
38.5
38.6
38.8
39.0
39.5
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
40.9
41.0
41.1
43.5
43.7
43.9
44.2
44.3
44.7
45.2
45.9
46.2
46.5
46.9
47.9
49.4
49.6
5.0
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
50.4
50.7
52.1
52.3
52.4
52.5
52.7
54.3
54.7
54.8
55.3
56.6
56.7
58.5
58.7
59.4
59.5
59.9
6.0
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
60.4
60.9
61.8
63.2
63.3
64.6
65.2
65.3
65.5
69.7
7.0
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
71.9
72.4
74.0
75.5
76.0
76.5
77.7
79.9
8.0
8.1
8.2
8.3
8.4
8.5
8.6
8.7
8.8
8.9
80.2
84.5
84.6
87.3
89.3
9.0
9.2
9.3
9.4
9.5
9.6
9.7
9.8
9.9
92.9
93.3
98.4