
Lee Spring stocks wide selection of extension springs in standard and instrument series configurations available for immediate shipment. Our in-stock extension spring inventory includes music wire, Type 302 stainless steel, and Type 316 stainless steel options with various end loop configurations. Filter by outside diameter, wire diameter, free length, initial tension, and maximum load to find the exact specification you need easily. All stock extension springs include free standard ground shipping option and a Certificate of Compliance. Learn more about Extension Springs and How to Measure an Extension Spring.
EI 007A 04 S316
|
0.16 |
0.063 |
1.6 |
0.08 |
0.007 |
0.18 |
90.3 |
0.0903 |
0.199 |
0.885 |
64 |
6.4 |
0.064 |
0.0064 |
0.36 |
0.63 |
0.063 |
2.339 |
0.921 |
23.39 |
11.3 |
0.0113 |
0.0249 |
0.111 |
1.113 |
0.438 |
11.13 |
SS 316
|
EI 007A 01 S
|
0.16 |
0.063 |
1.6 |
0.08 |
0.007 |
0.18 |
120.9 |
0.1209 |
0.2665 |
1.185 |
148 |
14.8 |
0.148 |
0.0148 |
0.83 |
1.45 |
0.145 |
1.372 |
0.54 |
13.72 |
11.3 |
0.0113 |
0.0249 |
0.111 |
0.635 |
0.25 |
6.35 |
SS
|
EI 007A 01 S316
|
0.16 |
0.063 |
1.6 |
0.08 |
0.007 |
0.18 |
90.3 |
0.0903 |
0.199 |
0.885 |
148 |
14.8 |
0.148 |
0.0148 |
0.83 |
1.45 |
0.145 |
1.166 |
0.459 |
11.66 |
11.3 |
0.0113 |
0.0249 |
0.111 |
0.635 |
0.25 |
6.35 |
SS 316
|
EI 007A 02 M
|
0.16 |
0.063 |
1.6 |
0.08 |
0.007 |
0.18 |
145.2 |
0.1452 |
0.32 |
1.423 |
123 |
12.3 |
0.123 |
0.0123 |
0.69 |
1.21 |
0.121 |
1.862 |
0.733 |
18.62 |
13.6 |
0.0136 |
0.03 |
0.133 |
0.795 |
0.313 |
7.95 |
MW
|
EI 007A 02 S
|
0.16 |
0.063 |
1.6 |
0.08 |
0.007 |
0.18 |
120.9 |
0.1209 |
0.2665 |
1.185 |
102 |
10.2 |
0.102 |
0.0102 |
0.57 |
1 |
0.1 |
1.862 |
0.733 |
18.62 |
11.3 |
0.0113 |
0.0249 |
0.111 |
0.795 |
0.313 |
7.95 |
SS
|
EI 007A 02 S316
|
0.16 |
0.063 |
1.6 |
0.08 |
0.007 |
0.18 |
90.3 |
0.0903 |
0.199 |
0.885 |
102 |
10.2 |
0.102 |
0.0102 |
0.57 |
1 |
0.1 |
1.57 |
0.618 |
15.7 |
11.3 |
0.0113 |
0.0249 |
0.111 |
0.795 |
0.313 |
7.95 |
SS 316
|
EI 007A 03 M
|
0.16 |
0.063 |
1.6 |
0.08 |
0.007 |
0.18 |
145.2 |
0.1452 |
0.32 |
1.423 |
95 |
9.5 |
0.095 |
0.0095 |
0.53 |
0.93 |
0.093 |
2.35 |
0.925 |
23.5 |
13.6 |
0.0136 |
0.03 |
0.133 |
0.953 |
0.375 |
9.53 |
MW
|
EI 007A 03 S
|
0.16 |
0.063 |
1.6 |
0.08 |
0.007 |
0.18 |
120.9 |
0.1209 |
0.2665 |
1.185 |
79 |
7.9 |
0.079 |
0.0079 |
0.44 |
0.77 |
0.077 |
2.35 |
0.925 |
23.5 |
11.3 |
0.0113 |
0.0249 |
0.111 |
0.953 |
0.375 |
9.53 |
SS
|
EI 007A 03 S316
|
0.16 |
0.063 |
1.6 |
0.08 |
0.007 |
0.18 |
90.3 |
0.0903 |
0.199 |
0.885 |
79 |
7.9 |
0.079 |
0.0079 |
0.44 |
0.77 |
0.077 |
1.956 |
0.77 |
19.56 |
11.3 |
0.0113 |
0.0249 |
0.111 |
0.953 |
0.375 |
9.53 |
SS 316
|
EI 007A 04 M
|
0.16 |
0.063 |
1.6 |
0.08 |
0.007 |
0.18 |
145.2 |
0.1452 |
0.32 |
1.423 |
77 |
7.7 |
0.077 |
0.0077 |
0.43 |
0.75 |
0.075 |
2.814 |
1.108 |
28.14 |
13.6 |
0.0136 |
0.03 |
0.133 |
1.113 |
0.438 |
11.13 |
MW
|
EI 007A 04 S
|
0.16 |
0.063 |
1.6 |
0.08 |
0.007 |
0.18 |
120.9 |
0.1209 |
0.2665 |
1.185 |
64 |
6.4 |
0.064 |
0.0064 |
0.36 |
0.63 |
0.063 |
2.814 |
1.108 |
28.14 |
11.3 |
0.0113 |
0.0249 |
0.111 |
1.113 |
0.438 |
11.13 |
SS
|
EI 007A 01 M
|
0.16 |
0.063 |
1.6 |
0.08 |
0.007 |
0.18 |
145.2 |
0.1452 |
0.32 |
1.423 |
179 |
17.9 |
0.179 |
0.0179 |
1 |
1.75 |
0.175 |
1.372 |
0.54 |
13.72 |
13.6 |
0.0136 |
0.03 |
0.133 |
0.635 |
0.25 |
6.35 |
MW
|
EI 007A 05 M
|
0.16 |
0.063 |
1.6 |
0.08 |
0.007 |
0.18 |
145.2 |
0.1452 |
0.32 |
1.423 |
64 |
6.4 |
0.064 |
0.0064 |
0.36 |
0.63 |
0.063 |
3.327 |
1.31 |
33.27 |
13.6 |
0.0136 |
0.03 |
0.133 |
1.27 |
0.5 |
12.7 |
MW
|
EI 007A 05 S
|
0.16 |
0.063 |
1.6 |
0.08 |
0.007 |
0.18 |
120.9 |
0.1209 |
0.2665 |
1.185 |
54 |
5.4 |
0.054 |
0.0054 |
0.3 |
0.53 |
0.053 |
3.327 |
1.31 |
33.27 |
11.3 |
0.0113 |
0.0249 |
0.111 |
1.27 |
0.5 |
12.7 |
SS
|
EI 007A 05 S316
|
0.16 |
0.063 |
1.6 |
0.08 |
0.007 |
0.18 |
90.3 |
0.0903 |
0.199 |
0.885 |
54 |
5.4 |
0.054 |
0.0054 |
0.3 |
0.53 |
0.053 |
2.743 |
1.08 |
27.43 |
11.3 |
0.0113 |
0.0249 |
0.111 |
1.27 |
0.5 |
12.7 |
SS 316
|
EI 008A 05 S316
|
0.16 |
0.063 |
1.6 |
0.02 |
0.008 |
0.2 |
127.5 |
0.1275 |
0.281 |
1.25 |
111 |
11.1 |
0.111 |
0.0111 |
0.62 |
1.09 |
0.109 |
2.283 |
0.899 |
22.83 |
15.1 |
0.0151 |
0.0333 |
0.148 |
1.27 |
0.5 |
12.7 |
SS 316
|
EI 008A 05 S
|
0.16 |
0.063 |
1.6 |
0.02 |
0.008 |
0.2 |
170 |
0.17 |
0.3748 |
1.667 |
111 |
11.1 |
0.111 |
0.0111 |
0.62 |
1.09 |
0.109 |
2.667 |
1.05 |
26.67 |
15.1 |
0.0151 |
0.0333 |
0.148 |
1.27 |
0.5 |
12.7 |
SS
|
EI 008A 06 S
|
0.16 |
0.063 |
1.6 |
0.02 |
0.008 |
0.2 |
170 |
0.17 |
0.3748 |
1.667 |
84 |
8.4 |
0.084 |
0.0084 |
0.47 |
0.82 |
0.082 |
3.416 |
1.345 |
34.16 |
15.1 |
0.0151 |
0.0333 |
0.148 |
1.588 |
0.625 |
15.88 |
SS
|
EI 008A 07 M
|
0.16 |
0.063 |
1.6 |
0.02 |
0.008 |
0.2 |
204.1 |
0.2041 |
0.45 |
2.002 |
82 |
8.2 |
0.082 |
0.0082 |
0.46 |
0.81 |
0.081 |
4.166 |
1.64 |
41.66 |
18.1 |
0.0181 |
0.04 |
0.178 |
1.905 |
0.75 |
19.05 |
MW
|
EI 008A 06 S316
|
0.16 |
0.063 |
1.6 |
0.02 |
0.008 |
0.2 |
127.5 |
0.1275 |
0.281 |
1.25 |
84 |
8.4 |
0.084 |
0.0084 |
0.47 |
0.82 |
0.082 |
2.926 |
1.152 |
29.26 |
15.1 |
0.0151 |
0.0333 |
0.148 |
1.588 |
0.625 |
15.88 |
SS 316
|
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