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

M10000956000	N/A 206468	N/A 6.00 Inch	N/A 1.000 Inch	N/A 1.000 Inch	N/A 1.000 Inch	N/A 0.095 Inch	N/A 6.00 Inch	N/A 3.6 lbs/in	N/A 2.70 Pound	N/A Full Twist Loop
M08500856000	N/A 206441	N/A 6.00 Inch	N/A 0.850 Inch	N/A 0.850 Inch	N/A 0.850 Inch	N/A 0.085 Inch	N/A 6.00 Inch	N/A 3.2 lbs/in	N/A 2.40 Pound	N/A Full Twist Loop
M07501156000	N/A 206403	N/A 6.00 Inch	N/A 0.750 Inch	N/A 0.750 Inch	N/A 0.750 Inch	N/A 0.115 Inch	N/A 6.00 Inch	N/A 23.9 lbs/in	N/A 6.27 Pound	N/A Full Twist Loop
M07500956000	N/A 206383	N/A 6.00 Inch	N/A 0.750 Inch	N/A 0.750 Inch	N/A 0.750 Inch	N/A 0.095 Inch	N/A 6.00 Inch	N/A 8.5 lbs/in	N/A 3.71 Pound	N/A Full Twist Loop
M07500756000	N/A 206363	N/A 6.00 Inch	N/A 0.750 Inch	N/A 0.750 Inch	N/A 0.750 Inch	N/A 0.075 Inch	N/A 6.00 Inch	N/A 2.4 lbs/in	N/A 1.90 Pound	N/A Full Twist Loop
M03600586000	N/A 206147	N/A 6.00 Inch	N/A 0.360 Inch	N/A 0.360 Inch	N/A 0.360 Inch	N/A 0.058 Inch	N/A 6.00 Inch	N/A 6.4 lbs/in	N/A 1.89 Pound	N/A Full Twist Loop
M03600556000	N/A 206130	N/A 6.00 Inch	N/A 0.360 Inch	N/A 0.360 Inch	N/A 0.360 Inch	N/A 0.055 Inch	N/A 6.00 Inch	N/A 4.7 lbs/in	N/A 1.60 Pound	N/A Full Twist Loop
M03600496000	N/A 206113	N/A 6.00 Inch	N/A 0.360 Inch	N/A 0.360 Inch	N/A 0.360 Inch	N/A 0.049 Inch	N/A 6.00 Inch	N/A 2.5 lbs/in	N/A 1.20 Pound	N/A Full Twist Loop
M03600456000	N/A 206096	N/A 6.00 Inch	N/A 0.360 Inch	N/A 0.360 Inch	N/A 0.360 Inch	N/A 0.045 Inch	N/A 6.00 Inch	N/A 1.6 lbs/in	N/A 0.90 Pound	N/A Full Twist Loop
M20002075500	N/A 206656	N/A 5.50 Inch	N/A 2.000 Inch	N/A 2.000 Inch	N/A 2.000 Inch	N/A 0.207 Inch	N/A 5.50 Inch	N/A 52.5 lbs/in	N/A 12.88 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
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
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
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
M15001775500	N/A 206618	N/A 5.50 Inch	N/A 1.500 Inch	N/A 1.500 Inch	N/A 1.500 Inch	N/A 0.177 Inch	N/A 5.50 Inch	N/A 38.5 lbs/in	N/A 10.97 Pound	N/A Full Twist Loop
M15001485500	N/A 206610	N/A 5.50 Inch	N/A 1.500 Inch	N/A 1.500 Inch	N/A 1.500 Inch	N/A 0.148 Inch	N/A 5.50 Inch	N/A 15.3 lbs/in	N/A 6.70 Pound	N/A Full Twist Loop
M15001255500	N/A 206602	N/A 5.50 Inch	N/A 1.500 Inch	N/A 1.500 Inch	N/A 1.500 Inch	N/A 0.125 Inch	N/A 5.50 Inch	N/A 6.4 lbs/in	N/A 4.20 Pound	N/A Full Twist Loop
M12501485500	N/A 206595	N/A 5.50 Inch	N/A 1.250 Inch	N/A 1.250 Inch	N/A 1.250 Inch	N/A 0.148 Inch	N/A 5.50 Inch	N/A 23.4 lbs/in	N/A 7.95 Pound	N/A Full Twist Loop
M12501355500	N/A 206586	N/A 5.50 Inch	N/A 1.250 Inch	N/A 1.250 Inch	N/A 1.250 Inch	N/A 0.135 Inch	N/A 5.50 Inch	N/A 14.5 lbs/in	N/A 6.18 Pound	N/A Full Twist Loop
M12501155500	N/A 206577	N/A 5.50 Inch	N/A 1.250 Inch	N/A 1.250 Inch	N/A 1.250 Inch	N/A 0.115 Inch	N/A 5.50 Inch	N/A 6.3 lbs/in	N/A 3.96 Pound	N/A Full Twist Loop
M12500955500	N/A 206569	N/A 5.50 Inch	N/A 1.250 Inch	N/A 1.250 Inch	N/A 1.250 Inch	N/A 0.095 Inch	N/A 5.50 Inch	N/A 2.3 lbs/in	N/A 2.33 Pound	N/A Full Twist Loop
M11251255500	N/A 206561	N/A 5.50 Inch	N/A 1.125 Inch	N/A 1.125 Inch	N/A 1.125 Inch	N/A 0.125 Inch	N/A 5.50 Inch	N/A 12.7 lbs/in	N/A 5.51 Pound	N/A Full Twist Loop
M11251055500	N/A 206552	N/A 5.50 Inch	N/A 1.125 Inch	N/A 1.125 Inch	N/A 1.125 Inch	N/A 0.105 Inch	N/A 5.50 Inch	N/A 5.1 lbs/in	N/A 3.40 Pound	N/A Full Twist Loop
M11250855500	N/A 206543	N/A 5.50 Inch	N/A 1.125 Inch	N/A 1.125 Inch	N/A 1.125 Inch	N/A 0.085 Inch	N/A 5.50 Inch	N/A 1.7 lbs/in	N/A 1.89 Pound	N/A Full Twist Loop
M10001485500	N/A 206532	N/A 5.50 Inch	N/A 1.000 Inch	N/A 1.000 Inch	N/A 1.000 Inch	N/A 0.148 Inch	N/A 5.50 Inch	N/A 43.7 lbs/in	N/A 9.68 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
1.4
1.5
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
11.2
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
14.2
14.3
14.4
14.5
14.6
14.7
14.8
14.9
143.8
15.0
15.1
15.2
15.3
15.4
15.5
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
18.0
18.1
18.2
18.3
18.7
18.9
19.0
19.2
19.3
19.5
19.6
19.7
19.8
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
20.1
20.3
20.4
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
23.2
23.3
23.4
23.5
23.8
23.9
239.6
24.1
24.2
24.3
24.4
24.5
24.7
24.8
24.9
25.0
25.1
25.4
25.5
26.2
26.3
26.5
26.9
27.1
27.2
27.3
27.7
27.8
28.2
28.4
28.5
28.7
28.9
29.0
29.1
29.2
29.3
29.7
3.0
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
30.2
30.3
30.6
30.7
31.0
31.2
31.3
32.0
32.1
32.2
32.7
33.3
33.8
33.9
34.0
34.2
34.3
34.6
35.0
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