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

M120016038M	N/A 205674	N/A 0.38 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.016 Inch	N/A 0.38 Inch	N/A 7.9 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M120016050M	N/A 205675	N/A 0.500 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.016 Inch	N/A 0.50 Inch	N/A 4.6 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M120016062M	N/A 205676	N/A 0.62 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.016 Inch	N/A 0.62 Inch	N/A 3.3 lbs/in	N/A 0.20 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
M01200160880	N/A 205678	N/A 0.88 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.016 Inch	N/A 0.88 Inch	N/A 2.0 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M120016100M	N/A 205679	N/A 1.000 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.016 Inch	N/A 1.00 Inch	N/A 1.7 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M120016112M	N/A 205680	N/A 1.12 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.016 Inch	N/A 1.12 Inch	N/A 1.4 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M120016125M	N/A 205681	N/A 1.250 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.016 Inch	N/A 1.25 Inch	N/A 1.3 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M01200161370	N/A 205682	N/A 1.37 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.016 Inch	N/A 1.37 Inch	N/A 1.1 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M120016150M	N/A 205683	N/A 1.500 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.016 Inch	N/A 1.50 Inch	N/A 1.0 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M01200161750	N/A 205684	N/A 1.750 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.016 Inch	N/A 1.75 Inch	N/A 0.9 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M01200162000	N/A 205685	N/A 2.000 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.016 Inch	N/A 2.00 Inch	N/A 0.7 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M120018038M	N/A 205686	N/A 0.38 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.018 Inch	N/A 0.38 Inch	N/A 14.4 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M120018050M	N/A 205687	N/A 0.500 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.018 Inch	N/A 0.50 Inch	N/A 8.6 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M120018062M	N/A 205688	N/A 0.62 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.018 Inch	N/A 0.62 Inch	N/A 6.1 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
M01200180880	N/A 205690	N/A 0.88 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.018 Inch	N/A 0.88 Inch	N/A 3.8 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M120018100M	N/A 205691	N/A 1.000 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.018 Inch	N/A 1.00 Inch	N/A 3.3 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M120018112M	N/A 205692	N/A 1.12 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.018 Inch	N/A 1.12 Inch	N/A 2.8 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M120018125M	N/A 205693	N/A 1.250 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.018 Inch	N/A 1.25 Inch	N/A 2.5 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M01200181370	N/A 205694	N/A 1.37 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.018 Inch	N/A 1.37 Inch	N/A 2.2 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M120018150M	N/A 205695	N/A 1.500 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.018 Inch	N/A 1.50 Inch	N/A 2.0 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M01200181750	N/A 205696	N/A 1.750 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.018 Inch	N/A 1.75 Inch	N/A 1.7 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M01200182000	N/A 205697	N/A 2.000 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.018 Inch	N/A 2.00 Inch	N/A 1.4 lbs/in	N/A 0.20 Pound	N/A Full Twist Loop
M01200182250	N/A 205698	N/A 2.250 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.120 Inch	N/A 0.018 Inch	N/A 2.25 Inch	N/A 1.3 lbs/in	N/A 0.20 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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11.3
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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14.7
14.8
14.9
143.8
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15.5
15.6
15.9
151.1
159.3
16.0
16.2
16.4
16.5
16.7
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17.1
17.2
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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19.2
19.3
19.5
19.6
19.7
19.8
2.0
2.1
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2.9
20.1
20.3
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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
28.2
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
34.3
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