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

M02400370620	N/A 205924	N/A 0.62 Inch	N/A 0.240 Inch	N/A 0.240 Inch	N/A 0.240 Inch	N/A 0.037 Inch	N/A 0.62 Inch	N/A 54.7 lbs/in	N/A 0.80 Pound	N/A Full Twist Loop
M00630080750	N/A 205609	N/A 0.750 Inch	N/A 0.063 Inch	N/A 0.063 Inch	N/A 0.063 Inch	N/A 0.008 Inch	N/A 0.75 Inch	N/A 0.5 lbs/in	N/A 0.04 Pound	N/A Full Twist Loop
M00630090750	N/A 205616	N/A 0.750 Inch	N/A 0.063 Inch	N/A 0.063 Inch	N/A 0.063 Inch	N/A 0.009 Inch	N/A 0.75 Inch	N/A 0.9 lbs/in	N/A 0.06 Pound	N/A Full Twist Loop
M00630110750	N/A 205623	N/A 0.750 Inch	N/A 0.063 Inch	N/A 0.063 Inch	N/A 0.063 Inch	N/A 0.011 Inch	N/A 0.75 Inch	N/A 2.5 lbs/in	N/A 0.10 Pound	N/A Full Twist Loop
M00940100750	N/A 205628	N/A 0.750 Inch	N/A 0.094 Inch	N/A 0.094 Inch	N/A 0.094 Inch	N/A 0.010 Inch	N/A 0.75 Inch	N/A 0.4 lbs/in	N/A 0.05 Pound	N/A Full Twist Loop
M00940110750	N/A 205635	N/A 0.750 Inch	N/A 0.094 Inch	N/A 0.094 Inch	N/A 0.094 Inch	N/A 0.011 Inch	N/A 0.75 Inch	N/A 0.7 lbs/in	N/A 0.06 Pound	N/A Full Twist Loop
M00940120750	N/A 205642	N/A 0.750 Inch	N/A 0.094 Inch	N/A 0.094 Inch	N/A 0.094 Inch	N/A 0.012 Inch	N/A 0.75 Inch	N/A 1.2 lbs/in	N/A 0.10 Pound	N/A Full Twist Loop
M00940130750	N/A 205649	N/A 0.750 Inch	N/A 0.094 Inch	N/A 0.094 Inch	N/A 0.094 Inch	N/A 0.013 Inch	N/A 0.75 Inch	N/A 1.7 lbs/in	N/A 0.10 Pound	N/A Full Twist Loop
M00940140750	N/A 205656	N/A 0.750 Inch	N/A 0.094 Inch	N/A 0.094 Inch	N/A 0.094 Inch	N/A 0.014 Inch	N/A 0.75 Inch	N/A 2.7 lbs/in	N/A 0.17 Pound	N/A Full Twist Loop
M00940160750	N/A 205663	N/A 0.750 Inch	N/A 0.094 Inch	N/A 0.094 Inch	N/A 0.094 Inch	N/A 0.016 Inch	N/A 0.75 Inch	N/A 5.3 lbs/in	N/A 0.19 Pound	N/A Full Twist Loop
M120014075M	N/A 205667	N/A 0.750 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.014 Inch	N/A 0.75 Inch	N/A 1.2 lbs/in	N/A 0.10 Pound	N/A Full Twist Loop
M120016075M	N/A 205677	N/A 0.750 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.016 Inch	N/A 0.75 Inch	N/A 2.5 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M120018075M	N/A 205689	N/A 0.750 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.018 Inch	N/A 0.75 Inch	N/A 4.7 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M120020075M	N/A 205701	N/A 0.750 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.020 Inch	N/A 0.75 Inch	N/A 8.3 lbs/in	N/A 0.30 Pound	N/A Full Twist Loop
M120022075M	N/A 205712	N/A 0.750 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.022 Inch	N/A 0.75 Inch	N/A 14.0 lbs/in	N/A 0.35 Pound	N/A Full Twist Loop
M180014075M	N/A 205724	N/A 0.750 Inch	N/A 0.180 Inch	N/A 0.180 Inch	N/A 0.180 Inch	N/A 0.014 Inch	N/A 0.75 Inch	N/A 0.4 lbs/in	N/A 0.07 Pound	N/A Full Twist Loop
M180018075M	N/A 205729	N/A 0.750 Inch	N/A 0.180 Inch	N/A 0.180 Inch	N/A 0.180 Inch	N/A 0.018 Inch	N/A 0.75 Inch	N/A 1.5 lbs/in	N/A 0.14 Pound	N/A Full Twist Loop
M180020075M	N/A 205741	N/A 0.750 Inch	N/A 0.180 Inch	N/A 0.180 Inch	N/A 0.180 Inch	N/A 0.020 Inch	N/A 0.75 Inch	N/A 2.7 lbs/in	N/A 0.19 Pound	N/A Full Twist Loop
M180022075M	N/A 205754	N/A 0.750 Inch	N/A 0.180 Inch	N/A 0.180 Inch	N/A 0.180 Inch	N/A 0.022 Inch	N/A 0.75 Inch	N/A 4.4 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M180024075M	N/A 205766	N/A 0.750 Inch	N/A 0.180 Inch	N/A 0.180 Inch	N/A 0.180 Inch	N/A 0.024 Inch	N/A 0.75 Inch	N/A 6.9 lbs/in	N/A 0.31 Pound	N/A Full Twist Loop
M180026075M	N/A 205779	N/A 0.750 Inch	N/A 0.180 Inch	N/A 0.180 Inch	N/A 0.180 Inch	N/A 0.026 Inch	N/A 0.75 Inch	N/A 10.6 lbs/in	N/A 0.40 Pound	N/A Full Twist Loop
M180029075M	N/A 205791	N/A 0.750 Inch	N/A 0.180 Inch	N/A 0.180 Inch	N/A 0.180 Inch	N/A 0.029 Inch	N/A 0.75 Inch	N/A 18.9 lbs/in	N/A 0.52 Pound	N/A Full Twist Loop
M01800310750	N/A 205804	N/A 0.750 Inch	N/A 0.180 Inch	N/A 0.180 Inch	N/A 0.180 Inch	N/A 0.031 Inch	N/A 0.75 Inch	N/A 27.1 lbs/in	N/A 0.60 Pound	N/A Full Twist Loop
M01800340750	N/A 205817	N/A 0.750 Inch	N/A 0.180 Inch	N/A 0.180 Inch	N/A 0.180 Inch	N/A 0.034 Inch	N/A 0.75 Inch	N/A 44.7 lbs/in	N/A 0.81 Pound	N/A Full Twist Loop
M240018075M	N/A 205830	N/A 0.750 Inch	N/A 0.240 Inch	N/A 0.240 Inch	N/A 0.240 Inch	N/A 0.018 Inch	N/A 0.75 Inch	N/A 0.9 lbs/in	N/A 0.11 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
0.055
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
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
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1.6
1.7
1.8
1.9
10.0
10.1
10.2
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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11.4
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
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13.4
13.5
13.6
13.7
13.8
134.1
14.0
14.1
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14.8
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
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17.3
17.5
17.8
17.9
179.7
18.0
18.1
18.2
18.3
18.7
18.9
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19.3
19.5
19.6
19.7
19.8
2.0
2.1
2.2
2.3
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2.7
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2.9
20.1
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20.7
20.8
202.8
21.1
21.3
21.5
21.6
21.8
22.0
22.1
22.4
22.5
22.8
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23.8
23.9
239.6
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24.7
24.8
24.9
25.0
25.1
25.4
25.5
26.2
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26.5
26.9
27.1
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27.3
27.7
27.8
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28.4
28.5
28.7
28.9
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29.1
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29.7
3.0
3.1
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3.3
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3.5
3.6
3.7
3.8
3.9
30.2
30.3
30.6
30.7
31.0
31.2
31.3
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32.1
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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
36.0
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