.

NORTH AMERICA

EUROPE

ASIA

CENTRAL & SOUTH AMERICA

AFRICA & MIDDLE EAST

Pacific Rim

 
0 Items Total: $0.00

Primary Criteria:

Slide Scales or Input Dimensions

Outside Diameter
 
 
 
Free Length
 
 
 
Maximum Load
 
 
 
 
Advanced Criteria

Select up to two of the criteria options for a more accurate search:

Rate

Load 1 at Height 1

Load 2 at Height 2

Initial Tension

Wire Diameter

Loop Position:
Material: [?]
Product Series

Can't Find the Spring You Are Looking For?

Request a quote for a custom spring made to your specifications

Request a Quote
Extension Spring

Extension Springs — In Stock & Ready to Ship

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.

Results 5399 Springs
EIM025B 04 S
0.249
0.098
2.49
0.025
0.01
0.25
207.8
0.2078
0.4581
2.038
66
6.6
0.066
0.0066
0.37
0.65
0.065
4.42
1.74
44.2
15.1
0.0151
0.0333
0.148
1.549
0.61
15.49
SS
EIM025B 04 M
0.249
0.098
2.49
0.025
0.01
0.25
249.5
0.2495
0.55
2.447
80
8
0.08
0.008
0.45
0.79
0.079
4.42
1.74
44.2
18.1
0.0181
0.04
0.178
1.549
0.61
15.49
MW
EIM025B 03 S
0.249
0.098
2.49
0.025
0.01
0.25
207.8
0.2078
0.4581
2.038
91
9.1
0.091
0.0091
0.51
0.89
0.089
3.383
1.332
33.83
15.1
0.0151
0.0333
0.148
1.25
0.492
12.5
SS
EIM025B 03 M
0.249
0.098
2.49
0.025
0.01
0.25
249.5
0.2495
0.55
2.447
109
10.9
0.109
0.0109
0.61
1.07
0.107
3.383
1.332
33.83
18.1
0.0181
0.04
0.178
1.25
0.492
12.5
MW
EIM025B 02 S
0.249
0.098
2.49
0.025
0.01
0.25
207.8
0.2078
0.4581
2.038
111
11.1
0.111
0.0111
0.62
1.09
0.109
2.827
1.113
28.27
15.1
0.0151
0.0333
0.148
1.1
0.433
11
SS
EIM025B 02 M
0.249
0.098
2.49
0.025
0.01
0.25
249.5
0.2495
0.55
2.447
134
13.4
0.134
0.0134
0.75
1.31
0.131
2.827
1.113
28.27
18.1
0.0181
0.04
0.178
1.1
0.433
11
MW
EIM025B 01 S
0.249
0.098
2.49
0.025
0.01
0.25
207.8
0.2078
0.4581
2.038
143
14.3
0.143
0.0143
0.8
1.4
0.14
2.296
0.904
22.96
15.1
0.0151
0.0333
0.148
0.95
0.374
9.5
SS
EIM025B 01 M
0.249
0.098
2.49
0.025
0.01
0.25
249.5
0.2495
0.55
2.447
171
17.1
0.171
0.0171
0.96
1.68
0.168
2.296
0.904
22.96
18.1
0.0181
0.04
0.178
0.95
0.374
9.5
MW
EI 012C 06 M
0.277
0.109
2.77
0.03
0.012
0.3
415
0.415
0.915
4.07
104
10.4
0.104
0.0104
0.584
1.02
0.102
5.832
2.296
58.32
38.6
0.0386
0.085
0.378
2.223
0.875
22.23
MW
EI 011C 02 M
0.277
0.109
2.77
0.028
0.011
0.28
318.9
0.3189
0.703
3.127
180
18
0.18
0.018
1.006
1.76
0.176
2.723
1.072
27.23
29.5
0.0295
0.065
0.289
1.113
0.438
11.13
MW
EI 012C 07 S316
0.277
0.109
2.77
0.03
0.012
0.3
261.3
0.2613
0.576
2.562
74
7.4
0.074
0.0074
0.412
0.72
0.072
5.652
2.225
56.52
32.2
0.0322
0.071
0.316
2.54
1
25.4
SS 316
EI 012C 07 S
0.277
0.109
2.77
0.03
0.012
0.3
348.4
0.3484
0.768
3.416
74
7.4
0.074
0.0074
0.412
0.72
0.072
6.838
2.692
68.38
32.2
0.0322
0.071
0.316
2.54
1
25.4
SS
EI 012C 07 M
0.277
0.109
2.77
0.03
0.012
0.3
415
0.415
0.915
4.07
88
8.8
0.088
0.0088
0.495
0.87
0.087
6.8
2.677
68
38.6
0.0386
0.085
0.378
2.54
1
25.4
MW
EI 012C 06 S316
0.277
0.109
2.77
0.03
0.012
0.3
261.3
0.2613
0.576
2.562
87
8.7
0.087
0.0087
0.487
0.85
0.085
4.854
1.911
48.54
32.2
0.0322
0.071
0.316
2.223
0.875
22.23
SS 316
EI 012C 06 S
0.277
0.109
2.77
0.03
0.012
0.3
348.4
0.3484
0.768
3.416
87
8.7
0.087
0.0087
0.487
0.85
0.085
5.862
2.308
58.62
32.2
0.0322
0.071
0.316
2.223
0.875
22.23
SS
EI 012C 05 M
0.277
0.109
2.77
0.03
0.012
0.3
415
0.415
0.915
4.07
127
12.7
0.127
0.0127
0.713
1.25
0.125
4.862
1.914
48.62
38.6
0.0386
0.085
0.378
1.905
0.75
19.05
MW
EI 012C 04 M
0.277
0.109
2.77
0.03
0.012
0.3
415
0.415
0.915
4.07
163
16.3
0.163
0.0163
0.914
1.6
0.16
3.894
1.533
38.94
38.6
0.0386
0.085
0.378
1.588
0.625
15.88
MW
EI 012C 04 S
0.277
0.109
2.77
0.03
0.012
0.3
348.4
0.3484
0.768
3.416
136
13.6
0.136
0.0136
0.762
1.33
0.133
3.914
1.541
39.14
32.2
0.0322
0.071
0.316
1.588
0.625
15.88
SS
EI 012C 04 S316
0.277
0.109
2.77
0.03
0.012
0.3
261.3
0.2613
0.576
2.562
136
13.6
0.136
0.0136
0.762
1.33
0.133
3.269
1.287
32.69
32.2
0.0322
0.071
0.316
1.588
0.625
15.88
SS 316
EI 011C 01 S316
0.277
0.109
2.77
0.028
0.011
0.28
200
0.2
0.441
1.962
199
19.9
0.199
0.0199
1.117
1.96
0.196
1.831
0.721
18.31
24.5
0.0245
0.054
0.24
0.953
0.375
9.53
SS 316

Why Choose Lee Spring?

large selection of springs

Selection

25,000+ products
available, plus custom
products made to your specification.

FREE Standard Ground Shipping

on Stock Springs in the Continental United States

FREE Plating

on all Music Wire Stock Springs

FREE Grinding

on all Standard Stock Compression Springs

in stock springs

In Stock

Springs ready to ship
today.

Expert Engineering Assistance

on Stock and Custom Springs

Certificate of Compliance

on all Stock Springs and Custom Springs

Guaranteed RoHS Compliance

on all Stock Springs

engineering and customer service support

Support

Engineering and
Customer Service teams ready to assist.

Live Customer Service Support

at all Locations

Enhanced CAD Downloads

on Stock Springs Designs

Global Flexibility

allows Lee Spring to find solutions that meet your
geographic requirements wherever your business
takes you in the world

Quick Catalog Request Form

Social Icon

  • facebook
  • facebook
  • linkedin
  • linkedin
  • twitter
  • twitter
  • facebook
  • facebook
  • linkedin
  • linkedin
  • twitter
  • twitter

LeeSpring

Lee Spring, 140 58th Street, Brooklyn, NY 11220 | 888-777-4647
Copyright 2020 Lee Spring Company